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Objective: To analyze the vaccination status of SARS-CoV-2 in children, and explore the relationship between SARS-CoV-2 vaccination and COVID-19 in children. Methods: A retrospective study was conducted to analyze the clinical data of 335 cases of SARS-CoV-2 Omicron variant infection from February 15, 2022 to March 18, 2022 in Shenzhen Third People's Hospital. Results: Among 335 children with SARS-CoV-2 infection, 174(51.9%) cases were vaccinated with the SARS-CoV-2 vaccine;33(31.4%) cases were vaccinated in the 3-<6 years old group;141(61.3%) cases were vaccinated in the 6-<14 years old group. There was a statistically significant difference in the proportion of SARS-CoV-2 vaccination between the 6-<14 years old group and the 3-<6 years old group (X2=26.1, P < 0.05). In the study cohort, 3-<6 years old group and 6-<14 years old group, there was no significant difference in the incidence of COVID-19 in the vaccinated group compared with the unvaccinated group (P > 0.05). In the study cohort, the proportion of confirmed cases of 1 dose of SARS-CoV-2 vaccine and 2 doses or more of SARS-CoV-2 vaccine was 89.5% (68 cases) and 77.6% (76 cases), respectively;in the 6~<14 years old group, the proportion of confirmed cases of 1 dose of SARS-CoV-2 vaccine and 2 doses or more of SARS-CoV-2 vaccine was 90.0% (54 cases) and 76.5% (62 cases), respectively;the differences were statistically significant (X2=4.264, P < 0.05;X2=4.279, P < 0.05). The IgG levels of 18.28 (6.61, 55.2) AU/mL and 58.3 (25.85, 131.41) AU/mL in the study cohort who were vaccinated for 1 dose, 2 doses and more, respectively;the IgG levels of 20.13 (8.33, 44.33) AU/mL and 56.57 (25.85, 150.07) AU/mL in the 6~<14 years old group who were vaccinated for 1 dose, 2 doses and more, respectively;and the differences were statistically significant (Z=-4.37, P < 0.05;Z=-3.96, P < 0.05). Conclusions: Children who received 2 doses of SARS-CoV-2 vaccine have a lower incidence of COVID-19 and higher levels of SARS-CoV-2 antibodies compared with who received 1 dose. It is recommended that children are advised to be vaccinated against the COVID-19.
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Based on the spatial-temporal perspective of geography, this paper quantitatively measures the impact of COVID-19 on the spatial-temporal pattern of tourism network attention in Zhangjiajie, and finally summarizes the influencing factors and mechanisms. The results show as follows. (1) From the perspective of time, the online attention of tourism in Zhangjiajie shows a trend of "decline to rebound, and to stability", which reflects the temporal mobility of the effect of COVID-19 on the tourism. (2) From the spatial dimension, the scale-order of attention to the Zhangjiajie' s tourism network is relatively stable, and the effect of COVID-19 on the tourism shows a trend of "distance decay" on the whole. (3) The adjustment of tourists' perception of tourism risk, destination familiarity and location, tourists' risk tolerance and authority restriction are the influencing factors of tourism net-work attention. These factors interact with each other to drive the spatio-temporal change of tourism network attention.
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OBJECTIVE: To analyze the role of nosocomial infection informatics surveillance system in the prevention and control of multidrug-resistant organisms(MDROs) infections. METHODS: The First Affiliated Hospital of Guangdong Pharmaceutical University was selected as the study subjects, which had adopted the nosocomial infection informatics surveillance system since Jan.2020. The period of Jan.to Dec.2020 were regarded as the study period, and Jan.to Dec.2019 were regarded as the control period. The situation of nosocomial infection and MDROs infections in the two periods were retrospectively analyzed. RESULTS: The incidence of nosocomial infections and underreporting of nosocomial infection cases in this hospital during the study period were 2.52%(1 325/52 624) and 1.74%(23/1 325), respectively, and the incidences of ventilator associated pneumonia(VAP), catheter related bloodstream infection(CRBSI), catheter related urinary tract infection(CAUTI)were 4.10(31/7 568), 2.11(14/6 634), and 2.50(25/9 993) respectively, which were lower than those during the control period(P< 0.05). The positive rate of pathogenic examination in the hospital during the study period was 77.95%(1 269/1 628), which was higher than that during the control period(P<0.05), the overall detection rate of MDROs was 15.77%(206/1 306), the detection rates of MDROs in Escherichia coli, Acinetobacter baumannii, Klebsiella pneumoniae, Staphylococcus epidermidis, Pseudomonas aeruginosa and Staphylococcus aureus were lower than those during the control period(P<0.05). CONCLUSION: The development and application of the informatics technology-based surveillance system of nosocomial infection could effectively reduce the incidence of nosocomial infections and device related infections, decrease the under-reporting of infection cases, and also reduce the detection rate of MDROs as well as the proportion of MDROs detected in common pathogenic species.
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Following the rapid scientific and technological development in this new era of global industrial transformation, the tourism industry has overcome the severe challenges of the COVID-19 pandemic by taking advantage of new development opportunities. Digital technologies, such as big data, cloud computing, artificial intelligence, and fifth-generation mobile communications have released the huge potential for promoting the development of the high-quality cultural tourism integration. Scholars have explored the benefits of developing and improving the quality of cultural tourism integration in addition to how the digital economy can promote the development of cultural tourism integration. Most existing research has regarded the digital economy as a means to promote the development of cultural tourism integration;however, there is relatively little systematic research on the logical mechanism, transmission channels, and practical paths that enable the high-quality development of cultural tourism integration. Therefore, this paper systematically explores the logical mechanism, direct effects, and transmission mechanisms in the digital economy that promote the development of high-quality cultural tourism integration. The study findings open up the "black box"of developing high-quality cultural tourism integration and help to establish its scientific basis in the digital economy. Based on a systematic explanation of how the digital economy enables the high-quality development and transmission of cultural tourism integration through organizational, technological, and product innovation channels, this paper conducts empirical testing using 2011-2020 panel data from 30 Chinese provinces (excluding Tibet, Hong Kong, Macao, and Taiwan of Chian) and obtains three main findings. First, the digital economy has a positive enabling effect on the development of high-quality cultural tourism integration, which has been verified in benchmark regression, instrumental variable regression, and robustness testing. Second, this enabling effect shows regional differences. For example, East China benefits from its relatively well-developed digital economy and can enjoy the dividends from its high-quality cultural tourism destinations. However, although West China has seen rapid growth in its digital economy, the region also shows a trend of increasing marginal effects from its enabling effect, while the digital economy's enabling trend in Central China still needs to be strengthened. Third, by constructing a transmission channel, that is, "digital economy-organization-technology-product innovation-developmental quality of cultural tourism integration", we find that the digital economy can positively promote the development of high-quality cultural tourism integration by regulating transmission channels for innovation, such as organizational, technological, and product innovation. According to the research conclusions, measures to promote the development of high-quality cultural tourism integration in the digital economy should be taken in the following four areas. First, local governments and cultural tourism departments should deepen their development strategies to integrate the digital economy with the real economy and systematically cultivate new drivers for the development of high-quality cultural tourism integration. Second, a digital cultural tourism platform should be built to optimize the value creation mechanism for the development of high-quality cultural tourism integration. Third, regional heterogeneity characteristics should be combined with the digital economy's enabling effect to implement a differentiated digital cultural tourism development strategy. Fourth, organizational, technological, and product innovation advantages should be cultivated to expand the transmission channels for the development of high-quality cultural tourism integration within the digital economy.
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Objective: To investigate the relationship between negative attentional bias and post-traumatic stress disorder(PTSD) in the context of higher depression and anxiety symptoms after the outbreak of COVID-19, so as to provide scientific basis for mental health education in primary and secondary schools. Methods: From March to April 2021, a total of 708 students from primary school and junior high school (grade 6 through grade 9) in Beijing, Shanxi, Hunan, Shandong, Hebei, Hubei of China were selected. The Children's Revised Impact of Event Scale(CRIES), the Attention to Positive and Negative Information Scale (APNI)and Depression, Anxiety and Stress Scale-21(DASS-21) were used in a questionnaire survey. Results: A total of 242 students were diagnosed with PTSD, and the detection rate was 34.2%. The scores of intrusion and high arousal of boys(7.92+or-5.33, 8.60+or-5.41) were lower than those of girls(8.72+or-4.85, 9.50+or-4.76), and the difference was statistically significant (t=-2.04, -2.32, P < 0.05). There were statistically significant differences of negative attention bias, CRIES score, intrusion, debarb and high arousal among primary and middle school students of different grades (F=3.57, 5.99, 4.45, 4.60, 7.40, P < 0.05). Negative attention bias, anxiety, depression and post-traumatic stress symptoms were significantly positively correlated (r=0.27-0.84, P < 0.05). Logistic regression analysis showed that anxiety (OR=1.13, 95%CI=1.06-1.20) and negative attention bias (OR=1.10, 95%CI=1.07-1.12) were positively associated with PTSD symptoms in primary and middle school students(P < 0.01). Conclusion: Anxiety and depressive symptoms show impacts on negative attention bias and might exacerbate the symptoms of post-traumatic stress disorder. Therefore, emotional adjustments can help reduce the post-traumatic stress response in the post-epidemic period.
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Objective: To explore the clinical characteristics of nucleic acid negative newborns delivered by pregnant women infected with SARS-CoV-2 (Omicron variant BA. 5.1.3) in Sanya area, and to provide evidence for understanding its clinical characteristics. Methods: A retrospective analysis was performed on 14 neonates with negative nucleic acid delivered by pregnant women who tested positive for SARS-CoV-2 (Omicron variant BA.5.1.3) in Sanya Central Hospital (the Third People's Hospital of Hainan Province) from June 2022 to September 2022 (observation group, n=14). The corresponding nucleic acid-negative newborns delivered by pregnant women detected negative with SARS-CoV-2 (Omicronon variant strain BA.5.1.3) were set as the control group (n=56), and the general data and clinical characteristics of neonates in the two groups were compared. Results: There was no significant difference between the observation group and the control group in pregnancy diabetes, pregnancy induced hypertension, gestational pre-eclampsia, fetal intrauterine distress, premature rupture of membranes (P > 0.05);there was no significant difference between the observation group and the control group in terms of sex, gestational age, birth weight, age, mode of delivery, birth Apgar score, heart screening, pulmonary disease, glucose 6-phosphate dehydrogenase (G6PD) deficiency, thalassemia, breast milk jaundice, hemolytic jaundice (P > 0.05). The bilirubin level, blue light irradiation cases and the duration of blue light irradiation of the newborns in the observation group at 7 days after birth were higher than those in the control group (P < 0.05);the ratio of blood oxygen saturation 90% in the observation group was lower than that in the control group (21.43% vs 89.29%, P < 0.05), and the ratio of blood oxygen saturation occasionally<90% was higher than that in the control group (57.14% vs 10.71%, P < 0.05). The ratio of blood oxygen saturation<90% had no significant difference compared with that in the control group (7.14% vs 0, P > 0.05), and the ratio of blood oxygen saturation reduced to the required oxygen uptake was higher than that in the control group (14.29% vs 0, P < 0.05). Conclusions: The jaundice manifestation of the nucleic acid-negative newborns delivered by pregnant women infected with SARS-CoV-2 (Omicronon variant strain BA.5.1.3) in Sanya area is relatively obvious, with blood oxygen saturation easily lower than 90% and even requiring oxygen inhalation in severe cases.
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Since the emergence of the Coronavirus disease outbreak, the world has witnessed great changes that have impacted humanity. A study of the pattern of the pandemic would be of great importance to understand the trending behavior for the spreading of the disease within any country. Visualization of the outbreak progression - through accumulated records in the datasets - using statistical tools showed that the initial fast increase rate of the affected cases in the original province in China was followed by a stability period till the end of the reporting date. Hong Kong - which was next to Hubei province in the cases - showed a different surge of slow growth curve with distinct major wave levels. The remaining territories showed a much smaller magnitude of morbidities. However, investigating the similarity levels for the daily kinetics of cases showed a clustering tendency between different political regions suggesting a significant correlation. The technique would be useful for public health authorities work.
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Objective: To analyze the epidemic characteristics of coronavirus disease 2019 (COVID-19) cases aged 60 years or older during the outbreak epidemic of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Omicron variant in Sanya City, Hainan Province, August-September 2022, and to provide scientific and effective basis for formulating strategies for the prevention and treatment of COVID-19 in the elderly in the future. Methods: The data of 1 785 COVID-19 cases aged 60 years reported from August 1 to September 8, 2022 in Sanya City, and 537 local COVID-19 inpatients aged 60 years treated in Sanya Central Hospital were collected and analyzed using WPS Office 2018 software for data cleaning, database assistance, and drawing, and SPSS 22.0 software was used to statistically describe and analyze the counting data. Results: A total of 1 785 local COVID-19 cases aged 60 years were reported in China's Disease Prevention and Control Information System, including 1 509 confirmed cases (84.54%) and 276 asymptomatic cases (15.46%). Of the confirmed cases, 1 448 were mild cases (95.96%), 40 were common cases (2.65%), 10 were severe cases (0.66%), and 11 were critical cases (0.73%), and no deaths were reported. The ratio of male to female was 0.88:1. The youngest was 60 years old, the oldest age was 107 years old, with a median age of 67 years old. Most of them (1 559 cases, 87.34%) were non-social employed personnel. Among them, 952 (53.33%) were from Tianya District and 733 (41.06%) from Jiyang District. Among the 537 COVID-19 elderly infected patients hospitalized in Sanya Central Hospital, infected patients with underlying diseases accounted for 287 (53.45%) cases of hypertension, diabetes and other types of basic diseases (chronic kidney disease, hyperlipidemia, chronic gastritis, gastric ulcer, etc.), and there were serious infections. Conclusions: Most of the elderly infected with Omicron variants were mild cases with few symptoms, but the elderly infected with Omicron variants were difficult to recover or even worsen the condition due to old age and underlying diseases. Therefore, by analyzing the various aspects of elderly infected cases, scientific and effective basis can be provided to prevent and control the epidemic situation in the future, and reduce the occurrence of severe, critical and death cases of COVID-19 in the elderly.
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Objective: To investigate the chest computed tomography (CT) manifestations and dynamic changes of coronavirus disease 2019 (COVID-19) in the patients younger than 18 years old infected with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Omicron variant, and to provide a basis for determining the chest CT changes and efficacy of COVID-19 caused by Omicron virus variant in patients younger than 18 years old. Methods The clinical and imaging data of 30 cases of patients younger than 18 years old infected with COVID-19 Omicron variant, who admitted to the Third People's Hospital of Shenzhen from February 11 to March 26, 2022 were collected and retrospectively analyzed. The clinical manifestations, imaging features and dynamic changes of lesions were summarized. Results A total of 41 intrapulmonary lesions in 30 patients with COVID-19 caused by SARS-CoV-2 Omicron variant. The main manifestations were patchy or nodular ground-glass opacities and/or consolidation, with focal subpleural distribution, lesions mainly occur in the right lung (70.73%, 29/41). There were 42 lesion morphologies, with 22 (52.38%) striped shadows and 16 (38.10%) nodular shadows, with small lamellar and patchy shadows predominating. There were 36 lesion density variations, with ground glass shadows being the most common, with a total of 24 ground glass shadows (66.66%) in each lobe of the lung, and also 6 consolidation lesions (16.67%) and 6 mixed ground glass opacity and consolidation lesions (16.67%). With the progression of the disease, lesions gradually enlarged, appeared on the 2nd day (312.93 mm3), peaked on the 9th day (1 837.18 mm3). The average absorption time of the lesions was (16+or-3) days, and there was no significant difference between the absorption time of patchy and nodular lesions (ground glass and/or consolidation) (t=0.853, P > 0.05). The lesions showed focal ground-glass opacity in the early stage, 77.78% lesions were absorbed after treatment in the late stage. Inflammatory nodules were absorbed slowly (9-19 days), without residual fibrotic changes. Conclusions The imaging manifestations of COVID-19 in patients younger than 18 years old infected with SARS-CoV-2 Omicron variant have certain characteristics, showed patchy or nodular ground glass opacities and/or consolidation, mainly distributed in the subpleural area, with small and few lesions and slow change, didn't remain fibrosis. Being familiar with its clinical and imaging manifestations can assist in early diagnosis, but confirming the diagnosis requires a combination of epidemiological history, clinical symptoms, SARS-CoV-2 nucleic acid and radiological manifestations.
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Background & Aims: In early January 2020, a new corona virus called corona was identified as an infectious agent by the World Health Organization and caused a viral pneumonia outbreak, the first of which was reported in Wuhan, China in December 2019. The virus has so far infected most countries in the world and has become a global problem. By this time in December 2021, about 265 million people in the world have been infected with this virus and 5 million 270 thousand people have died from this disease. According to the World Health Organization, the incidence of this disease is still increasing and will become the third leading cause of death in the world by 2030. This disease has a special complexity and has multiple dimensions and consequences that have caused many problems in the field of health, social and economic as well as psychological for people. The emergence of this disease is now a public health crisis. According to this research, exposure to news and restrictions caused by this disease can lead to many mental health problems. In fact, one of the situations that puts a lot of stress on people during the outbreak of covid 19 disease is the inability to predict and uncertainty about the control and end of the disease. Mental health is defined as a harmonious and harmonious behavior with society, recognizing and accepting social realities, the power to adapt to them and meeting one's balanced needs and is an important factor for the health of society. The prevalence of the disease can also increase feelings of loneliness, decrease social support, feelings of fear and anxiety to clinical stress and anxiety, obsessive-compulsive disorder associated with the disease, and decreased life expectancy. One of the hopeful factors is health and the disease can cause despair, fear and even despair of the patient. The outbreak of a disease has a much deeper and wider impact and affects not only the affected community and relatives, but the entire community. Because everyone finds themselves at risk, and therefore people's feel of safe and healthy changes, and this situation causes people to despair. Hope is the capacity to imagine the ability to create paths to desirable goals and to imagine the motivation to move in those paths. Hope predicts physical and mental health such as positive response to medical interventions, mental health, effective getting along, and health-promoting behaviors. Covid 19 disease can also lead to psychological problems due to its infectious nature and unpredictable nature. In this regard, various researchers consider the implementation of public health policies, including areas related to individual and collective mental health in accordance with the different stages of the epidemic of this disease is very necessary. Mindfulness can be an effective tool for achieving peace of mind and body that helps people become aware of their current feelings. Mindfulness-based interventions are considered as one of the third generation or third wave cognitive-behavioral therapies. Mindfulness is a form of meditation rooted in Eastern religious teachings and rituals, especially Buddhism. Segal has defined mindfulness as paying attention to specific and purposeful ways, in the present time, without judgment or prejudice. Linhan stressed for the first time the need to pay attention to mindfulness as one of the essential components of psychological therapy. Mindfulness requires the development of three components: judgment avoidance, purposeful awareness, and focus on the present moment. Focusing on the present and processing all aspects of the above experience makes one aware of the daily activities and automatic functioning of the mind in the past and future world and he controls emotions, thoughts, and physical states through moment-to-moment awareness of thoughts. As a result, it is released from the everyday and automatic mind focused on the past and the future. Although general vaccination has reduced the virus in some countries, including Iran, and reduced the number of infected people, a large num
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Objective: To analyze the distribution and drug resistance of pathogenic bacteria in blood culture specimens of patients with bloodstream infections before and after COVID-19 (2018-2019 and 2020-2021), and to provide scientific basis and reference for rational treatment and effective control of bloodstream infections in the post-epidemic period. Methods: Blood culture specimens were collected from patients in Zhongnan Hospital of Wuhan University in the two years before and after the COVID-19 outbreak (2018-2021). The Automated Blood Culture Systems were used to perform blood culture on blood specimens sent for clinical inspection, and the Vitek MS automatic bacterial identification mass spectrometer was used for strain identification and the Vitek 2 automatic bacterial drug susceptibility analyzer was used for drug susceptibility testing and drug resistance analysis. Results: Blood culture specimens were performed on 28 736 patients with suspected bloodstream infection submitted for inspection from January 2018 to December 2019, and a total of 2 181 strains of pathogenic bacteria were detected after removing duplicate strains, with a positive rate of 7.69%, including 1 046 strains of Gram-negative bacteria, accounting for 47.96%. From January 2020 to December 2021, blood culture specimens from 26 083 patients with suspected bloodstream infection were submitted for inspection, and a total of 2 111 strains of pathogenic bacteria were detected after excluding duplicate strains, with a positive rate of 8.09%, including 1 000 strains of Gram-negative bacteria accounted for 47.37%. The drug resistance of Klebsiella pneumoniae was relatively serious, and the sensitivity rate to ertapenem, polymyxin B and tigecycline was more than 90%. The main non-fermentative bacteria Acinetobacter baumannii was more than 50% sensitive to piperacillin/tazobactam, amikacin and polymyxin B. The sensitivity rates of Pseudomonas aeruginosa to piperacillin/tazobactam, ceftazidime, cefepime, amikacin, gentamicin, tobramycin, ciprofloxacin, levofloxacin, piperacillin and meropenem were more than 50%. Conclusions: In the two years before and after COVID-19, there are many types of pathogenic bacteria in bloodstream infection, but the distribution do not differ significantly. The pathogens of bloodstream infection are mainly distributed in ICU, hepatobiliary research institute, and nephrology department. Among them, Gram-negative bacteria such as Escherichia coli, Klebsiella pneumoniae and Acinetobacter baumannii are the main ones, and different pathogens showed great differences in drug resistance.
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[Objective] To prepare broad-spectrum monoclonal antibody against N protein of avian infectious bronchitis virus (IBV), so as to lay a foundation for identifying conservative domain epitope of N protein and establish a universal IBV detection method. [Method] N protein of GX-YL5, a representative strain of IBV dominant serotype in Guangxi, was expressed in prokaryote. BALB/c mice were immunized with the purified protein. After the serum titer of the immunized mice reached 104 or more, the splenocytes were fused with SP2/0 myeloma cells. After screening by indirect ELISA, monoclonal antibody was prepared by ascites-induced method. Western blotting, IFA and indirect ELISA were used to identify the titer, subtype, reaction specificity and cross-reaction spectrum. And the prepared monoclonal antibody was used for immunohistochemical detection. And the prepared monoclonal antibody was used to detect the IBV in the trachea and kidney tissues of SPF chickens artificially infected with 4 representative IBV variants (GX-N130048, GX-N160421, GX-QZ171023 and GX-QZ170728). [Result] The prepared monoclonal antibody N2D5 had a titer greater than 217 and its subtype was IgG2b. The Western blotting and IFA results showed that the monoclonal antibody N2D5 only reacted with IBV, and were negative with Newcastle disease virus (NDV), infectious laryngotracheitis virus (ILTV), avian metapneumovirus (aMPV), infectious bursal disease virus (IBDV), avian leukosis virus (ALV) and Marek's disease virus (MDV). Monoclonal antibody N2D5 reacted with many genotypes in China and all 7 serotypes of IBV currently prevalent in Guangxi, including commonly used standard strains, vaccine strains and field strains. Immunohistochemistry showed that the virus signals could be detected in the trachea and kidney tissues of SPF chickens at different time after artificial infection of 3 representative IBV strains from chicken and 1 isolated strain from duck, which further proved its broad spectrum. [Conclusion] The monoclonal antibody N2D5 of IBV prepared based on hybridoma technology belongs to the IgG2b subtype. It has the characteristics of high specificity, wide response spectrum and strong binding ability with IBV. It can be used as a specific diagnostic antibody for clinical diagnosis of IBV and the study of virus distribution.
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Objective: To understand the epidemiological changes of children infected with 8 respiratory viral pathogens under the protection strategy of the new coronavirus epidemic in Guangzhou. Methods: A total of 13 606 children diagnosed with upper respiratory tract infection from January 2019 to December 2020 were retrospectively analyzed. Children were divided into four groups: infant group, toddler group, preschool group and school age group. Indirect immunofluorescence assay (IFA) was used to detect eight major respiratory virus pathogens, including: adenovirus (ADV), respiratory syncytial virus(RSV), influenza A virus (IV-A), influenza B virus (IV-B), parainfluenza virus (PIV), Chlamydia pneumonia(CP), Legionella pneumophila (LP) and Mycoplasma pneumonia (MP). Results: Sinc ethe outbreak of COVID-19, the positive rates of eight respiratory pathogens had decreased, especially influenza A and B. The positive rate of IV-A showed significant decrease from 30.126% to 12.930%, and the positive rate of IV-B from 25.597% to 19.268%, the defferences were statistically significant (X2=52.849, 369.778, all P < 0.05). Among different age groups, the positive rates of IV-A and ADV infection in each group decreased significantly, especially in infant group and toddler group. The positive rate of IV-A showed significant decrease from 4.588% to 1.979%, and the positive rate of ADV from 43.007% to 21.240%, the defferences were statistically significant(X2=18.910, 197.714, all P < 0.05). Before and after the outbreak of COVID-19, the differences in ADV, IV-A, IV-B, MP and PIV between the male and female groups were statistically significant (P < 0.05). Conclusion: Novel coronavirus protective measures were effective in preventing some common respiratory diseases in children.
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ObjectiveTo analyze the influenza surveillance data in Ezhou City, Hubei Province from 2016 to 2021, determine the epidemiological characteristics and etiological trend of influenza like illness (ILI), and to provide scientific evidence for influenza prevention and control. MethodsThe ILI surveillance data were reported by Ezhou influenza sentinel hospitals and etiological examination results were collected by network laboratory. Influenza surveillance data from 2016 to 2021 were analyzed. ResultsFrom 2016 to 2021, the percentage of ILI visits (ILI%) in Ezhou city was 2.81% and increased over years. Majority (55.55%) of ILI cases were 0-4 years. A total of 7 716 ILI samples were examined from 2016 to 2021, of which 1 467 tested positive with a positive rate of 19.01%. Influenza A H1N1 was mainly concentrated in January-April, A H3N2 mainly in August-December, B Victoria mainly in April-July and December-March, and B Yamagata mainly in December-February. Influenza network laboratory isolated influenza virus from the 1 467 positive samples by using MDCK cells and SPF chicken embryos. The overall isolation rate was 32.78%, which was 26.93% by MDCK cells and 5.86% by SPF chicken embryos. From 2016 to 2021, a total of 13 ILI outbreaks were reported in Ezhou City. Temporally, the outbreaks mainly occurred in winter and spring. Spatially, they were mainly in primary schools, middle schools and kindergartens. ConclusionThe winter and spring are the key time period of influenza prevention and control in Ezhou City, as they are susceptible to influenza outbreaks. Children aged 0-14 are the key population of prevention and control. Diverse subtypes of influenza virus alternate by years, which warrants continually strengthening monitoring. Additionally, certain countermeasures against COVID-19 may be recommended in the prevention and control of influenza.
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Objective: To investigate the serum levels of human cartilage glycoprotein 39 (YKL-40), 25-hydroxy vitamin D3 [25-hydroxy vitamin D3, 25 (OH)D3] and high mobility group protein B1 (high mobility group protein B1, HMGB1) level changes in the diagnosis of neonatal pneumonia infection type and the application of disease assessment. Methods: A total of 105 children with NP who were admitted to the Department of Neonatology, Longhua District People's Hospital of Shenzhen from January to December 2020 were selected as the research objects. According to different infectious pathogens, they were divided into a bacterial pneumonia group of 40 cases and a non-bacterial pneumonia group of 65 cases. According to the severity of the disease, they could be divided into 69 cases of mild pneumonia group and 36 cases of severe pneumonia group, and 85 healthy newborns were selected as the control group during the same period. Serum levels of YKL-40, 25 (OH)D3 and HMGB1 were detected by enzyme-linked immunosorbent assay. ROC curve was used to analyze the differential diagnosis value of YKL-40, 25 (OH) D3 and HMGB1 for NP alone or in combination. Spearman rank correlation was used the relationship between serum YKL-40, 25 (OH) D3 and HMGB1 levels and the severity of the disease in children with NP was analyzed. Results: The serum levels of YKL-40 (46.39 +or- 8.36 ng/ml, 40.28 +or- 8.47 ng/ml)and HMGB1 (23.38 +or- 5.66 ng/ml, 17.32 +or- 4.18 ng/ml) in the bacterial pneumonia groups and non-bacterial pneumonia groups were significantly higher than those in the control group (30.49 +or- 6.35 ng/ml, 12.56 +or- 3.22 ng/ml), and the differences were statistically significant (F=939.480, 99.507, all P < 0.05), while bacterial and non-bacterial pneumonia groups serum 25 (OH) D3 (12.76 +or- 3.57 g/L, 18.33 +or- 4.21 g/L) levels were significantly lower than those in the control group (19.76 +or- 4.87 g/L), and the difference was statistically significant (F=225.752, P < 0.05). The serum levels of YKL-40 (52.56 +or- 9.68 ng/ml) and HMGB1 (26.74 +or- 4.57 ng/ml) in the severe group were significantly higher than those in the mild group (16.63 +or- 5.32 ng/ml, 9.63 +or- 2.38 ng/ml) and the control group (11.63 +or- 3.32 ng/ml, 6.34 +or- 2.06 ng/ml), the differences were all statistical significance (F=265.331, 55.426, all P < 0.05), and serum 25 (OH) D3 (9.76 +or- 3.54 g/L, 31.16 +or- 5.01 g/L)levels in the severe and mild were significantly lower than control groups (35.16 +or- 5.88 g/L) (F=55.426, P < 0.05) . The results of Spearman rank correlation analysis showed that the disease severity was positively correlated with serum YKL-40 and HMGB1 levels (r=0.727, 0.210, all P < 0.05), but negatively correlated with 25 (OH) D3 levels (r= -0.566, P < 0.05). The results of ROC curve analysis showed that the combined detection of YKL-40, 25 (OH) D3 and HMGB1 had the highest efficacy in diagnosing NP, the AUC was 0.912 (95%CI: 0.864-0.932), the sensitivity and specificity were 96.34%, 85.72%, respectively. In the single detection of each index, the differences in AUC were statistically significant (Z=0.746, 2.843, 3.662, all P < 0.05). The combined detection of the three had the highest diagnostic efficiency in distinguishing neonatal bacterial pneumonia from non-bacterial pneumonia, and its AUC was 0.894 (95%CI: 0.832-0.941), the sensitivity and specificity were 97.26%, 80.66%, respectively. Which was higher than the single test of each index, and the difference in AUC was statistically significant (Z=1.573, 3.228, 2.689, all P < 0.05). Conclusion: Serum levels of YKL-40, 25 (OH) D3 and HMGB1 had important clinical value in diagnosis of NP infection types and in reflecting the severity of children's disease, the combined detection of the three has better clinical diagnostic performance.
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Background: In March 2020, WHO declared COVID-19 a global pandemic. Since then, our lives have changed significantly, particularly vulnerable groups, such as young children. A young child's movements throughout a typical day include sleeping, sitting, and physical activity (PA) of different intensities. In 2019 the WHO released the first global guideline for movement behavior of children under the age of five. Due to the distinct movement behavior recommendations for this age group and the impact of the COVID-19 pandemic on these behaviors, the present review aims to appraise the literature from across the globe on the effect of COVID-19 on movement behaviors, including screen-time, PA, and sleep in infants, toddlers, and preschoolers. Methods: PubMed and Google scholar electronic database were searched, the titles and s of all articles retrieved from the search were screened and duplicates were removed. The full texts of potential articles to be included in the study were then reviewed based on the inclusion criteria, and data were extracted from the selected studies using a Microsoft Excel sheet. Results: This review included 11 studies. Four studies cross-sectional, six longitudinal, and one cohort study. The sample size ranged from 25 to 4,136 children. In all of the studies, the sedentary screen-time increased significantly. Sleep, on the other hand, did not change significantly in the majority of the studies, although sleep duration increased in some studies. There were large discrepancies between the device-measured and parent-reported outcomes regarding physical activity that decreased in all studies, except for the Hong Kong and Sweden studies it increased. Conclusion: As the world is still recovering from the impact of the COVID-19 pandemic and managing the uncertainty of other pandemics that may occur, our review can help to promote a healthy balanced pattern of movement behaviors by providing information to support parents of young children.
ABSTRACT
The COVID-19 pandemic has changed the mobility, accessibility, and behaviors of visitors dramatically. Under the impact of COVID-19, the social carrying capacity and emotion dynamics in parks and recreation areas are expected to change due to the uncertainty of health risks associated with visitors' behaviors. This study conducted an on-site visitor survey at Leiqiong Global Geological Park, a national park located in urban-proximate areas in Haikou, China. This study aims to examine factors impacting visitors' perceived crowding and emotions under varying levels of visitor use in urban national parks in the context of COVID-19. Study results suggest that visitors have the highest level of motivation for scenery and culture viewing and are generally satisfied with the environmental quality and design and COVID-19 prevention strategies and implementation efforts within the park. Moreover, this study suggests that the level of crowding and COVID-19 prevention strategies and implementation can affect visitors' emotions in urban natioanl parks significantly. These findings highlight the importance of enforcing the social carrying capacity limits and COVID-19 prevention strategies for urban parks and protected areas to mitigate physical and mental health risks during the COVID-19 pandemic.
ABSTRACT
Since the discovery of novel coronavirus pneumonia (Covid-19) in Wuhan, China, in December 2019, it has spread to other Chinese provinces and continents in just one month, becoming a "public health emergency of international concern". The undesired behaviors of the public and patients during the Covid-19 epidemic cannot be ignored, but few scholars have studied them. In this study, we firstly adopted a qualitative analysis method based on a theoretical paradigm to to summarize the human factors in the spread of the COVID-19 epidemic, and defined the concept of "human factors of the epidemic". Then, we analyzed the distribution characteristics of "human factors of epidemic" at each stage by using statistical analysis, and constructed a human factors model of epidemic evolution. Finally, a multi-subject risk assessment model was constructed using a fuzzy Bayesian network analysis method to quantify the human factors risk in the spread of the COVID-19 epidemic. The results of the study are as follows. (1) The human factors of the COVID-19 epidemic mainly focused on five aspects, including cognitive bias, defective design, management bias, environmental defects, and intentional violations. (2) There were differences in the human factors at different stages of the spread of the COVID-19 epidemic. In the outbreak stage, human factors of the COVID-19 epidemic showed complex trends, with factors such as lack of knowledge and low awareness still prevailing on the one hand, and factors such as lack of capacity, overtly agree but covertly oppose, dereliction of duty, concealment and misreporting, lack of resources, protection defects, design defects, escape/fleeing, and public gathering on the other hand also being more prominent. (3) The risk of the spread of the COVID-19 epidemic due to undesired human factors in the subjects involved was high (p=0.641) under conventional intervention scenarios. Risk factors such as low awareness, poor decision making, lack of resources, lack of awareness, system deficiencies, public agglomeration, inadequate protection, misreporting, and dereliction of duty had relatively large sensitivity factors and were key human factors for the spread of the epidemic in Wuhan. Finally, targeted recommendations are proposed based on the evolutionary pattern and risk level of the human factors of the COVID-19 epidemic.
ABSTRACT
Whole-genome sequencing of upper respiratory tract specimens from patients with confirmed COVID-19 in Henan Province was performed to compare the performance of the Illumina and Oxford Nanopore sequencing platforms, thus providing a reference for whole-genome monitoring of the novel coronavirus (SARS-CoV-2). Ten samples from COVID-19 cases in Henan Province from June 2021 to January 2022 were collected and sequenced with Illumina and Nanopore high-through-put sequencing technology to obtain full genome sequences of the novel coronavirus, which were compared with the Wuhan reference sequence (Wuhan-Hu-1). Bioinformatics software (CLC) was used for sequence alignment analysis. Three of the ten samples were Omicron (BA.1) variants with 55,61 nucleotide variation sites. One sample was an Alpha (B.1.1.7) variant with 41 nucleotide variation sites. Six samples were Delta (8.1.617.2) variants with 35,42,47 nucleotide variation sites. The sequence identity of mutation sites in six samples was 100%, and the mutation sites in the S genome segment of seven samples were consistent. For samples with a Ct value < 33, both next-generation and third-generation sequencing achieved high genome coverage and sequencing depth. A significant difference in coverage was observed between second-generation sequencing and third-generation sequencing (t=-2.037, P < 0.06). However, the coverage at different time points of the third-generation sequencing did not significantly differ (F=2.498, P > 0.05). The needs for SARS-CoV-2 mutant detection could be met through use of either high-throughput sequencing platform. The identification of mutations in the novel coronavirus through Illumina high-throughput sequencing was more accurate, whereas Nanopore high-throughput sequencing technology could be used for rapid detection and typing of different novel coronaviruses.
ABSTRACT
To analyze the population density, seasonal fluctuation of Aedes albopictus in Haizhu District, Guangzhou from 2017 to 2021, so as to provide a scientific basis for the monitoring and prevention and control of mosquito vector density of dengue fever. The data of dengue fever cases and Aedes surveillance data in Haizhu District, Guangzhou from 2017 to 2021 were collected, and the data of 2017-2019 and 2020-2021 were grouped to compare and analyze the characteristics of dengue epidemic and the density fluctuation of Aedes mosquitoes. A total of 517 dengue cases were reported in Haizhu District, Guangzhou from 2017 to 2021, of which only 7 cases were reported from 2020 to 2021, and the peak period of reported cases every year was August to November. Before the COVID-19 pandemic, there was a positive correlation between the number of local cases and the number of imported cases(rs=0.63, P<0.05) and BI(rs=0.73, P<0.05). The peak density of Aedes was from May to October, and the differences of mean BI(X~2=1 143.40,P<0.001), MOI(X~2=188.30,P<0.001), and SSI(X~2=4 499.43,P<0.001)before and after the COVID-19 pandemic were statistically significant. In general, before and after the COVID-19 pandemic, the density of Aedes in high-risk areas was higher than that in low-risk areas. After COVID-19 pandemic, the number of reported cases and the density of Aedes in Haizhu District decreased, but the density of Aedes in the high-risk area was still higher than that in low-risk areas, and a certain risk of outbreak still existed, so the government should continue to take more precise measures to strictly prevent dengue epidemic.