Coinfection in the cases of feline panleukopenia: a literature review

Coinfection caused by bacteria, parasites, or viruses complicates almost all feline panleukopenia virus (FPV) infections. Pathogens that colonize the gastrointestinal tract, Clostridium perfingens, Clostridium piliforme, Cryptosporidium spp, Giardia spp, Tritrichomonas fetus, canine parvovirus type 2,Salmonella sp., feline coronavirus, feline bocavirus, and feline astrovirus were isolated in the presence of FPV infection. Complex mechanisms between viruses, bacteria, protozoa, and hosts contribute to the pathogenesis and severity of coinfection. Prompt and accurate diagnosis, vaccination precautions, and appropriate treatment play important roles in reducing morbidity and mortality. This article outlines the etiology, pathogenesis, diagnosis, prevention, and treatment that can help veterinarians and pet owners improve their knowledge of managing the diseases.

Evaluation and analysis of rates of bacterial co-infections and antimicrobial usage in COVID-19 patients: a retrospective cohort analysis

Background: The coronavirus disease 2019 (COVID- 19) caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has spread over the world. Although there are minimal microbiological and antibiotic data on COVID-19, bacterial co-infections have been related to poor outcomes in respiratory viralinfections. Adequate antibiotic use in conformity withantibiotic stewardship (ABS) recommendations is necessary during the pandemic. Material and procedure: We conducted a retrospective single-center cohort analysis of 140 adulthospitalised patients (ages 17-99) with confirmed COVID-19 who were admitted between February 16, 2021, and April 22, 2021, and who were discharged onMay 6, 2021. From 140 COVID-19 participants, the following clinical data was gathered: Men made up 63.5 percent of the participants, with a median age of 63.5 years (range 17-99). Results: According to local ABS recommendations, the most commonly administered antibiotic regimen was ampicillin/sulbactam (41.5 percent) with a median length of 6 (range 1-13) days. Urine antigen testing for Legionella pneumophila and Streptococcus peumoniaewas negative in all of the patients. In critically ill patients hospitalised to intensive care units (n = 50), co-infections with Enterobacterales (34.0%) and Aspergillus fumigatus (18.0%) were discovered. Blood cultures obtained at admission had a diagnostic yield of 4.2 percent. Conclusion: While bacterial and fungal co-infections are rare in COVID-19 patients, they are widespread in critically ill individuals. More investigation into the impact of antimicrobial therapy on therapeutic success in COVID-19 patients is essential to prevent antibiotic abuse. COVID-19 management might be improved with the aid of ABS standards. It's also necessary to look at the microbiological patterns of infectious consequences in COVID-19 individuals who are severely unwell.

Seroepidemiological and clinicopathological investigation of Canine Coronavirus infection in dogs, in t..rkiye

Domestic and wild dogs of all ages and breeds are susceptible to Canine Coronavirus(CCoV) infections and be seen in T..rkiyeand amongst world. CCoV has recently been declared a zoonotic disease agent and the eighth pathogenic human coronavirus. This study was conducted on 143 naturally infected dogs with gastroenteritis which were not vaccinated against CCoV in T..rkiye in 2015-2020. The data of dogs were analyzed seroepidemiologically, clinicopathologically and statistically. CCOV antibodies in serum and CCOV antigens in stool were detected by ELISA and lateral immunochromatography. The rising CCoV IgG antibody titers were detected at all dogs and were as follows;<10 ng/L in 3 (2%), 10-20 ng/L in 18 (13%), 20-30 ng/L in 16 (11%), 30-40 ng/L in 14 (%10), 40-64 ng/L in 11 (8%) and >64 ng/L in 81 (81%) dogs. CCOV and Canine Parvovirus (CPV) antigen were detected together in the stool of the 41 (28.7%) dogs. As a result, it was concluded that the CCOV agent is in circulation among dogs living in T..rkiye. CCOV and CPV can cause co-infections and increased mortality. Although infection can be seen in dogs of all ages, it can be seen more frequently in dogs younger than 1 year of age, and especially in dogs younger than 6 months, and can cause enteritis, low hemoglobin, erythropenia, lymphopenia, leukopenia, thrombocytopenia, and hypoproteinemia.

Epidemiological investigation of bovine viral diarrhea virus infection in swinery

From 2017 to 2020, 1 078 piglet diarrhea samples were collected from 6 pig farms in different districts of Shanghai. Multiple RT-PCR method was used for detection and analysis to study the infection status of bovine viral diarrhea virus (BVDV) in swinery in Shanghai. The results showed that the overall detection rate of BVDV in swinery in Shanghai was 7.14% (77/1 078), and showed an increasing trend year by year. The mixed infection rate of BVDV and other diarrhea pathogens was high, with the highest dual infection rate (65%, 26/40), mainly BVDV/PASTV (61.54%, 16/26). On this basis, the triple infection rate was 25% (10/40), mainly BVDV/PAStV/PKoV (40%, 4/10) infection mode;The quadruple infection rate was 10% (4/40), which was dominated by BVDV/PAStV/PEDV/PSV (50%, 2/4) infection. The BVDV prevalence in swinery was seasonal, and the prevalence in spring (10.36%) and autumn (13.59%) was higher than that in summer (6.8%) and winter (2.66%). The positive rate of BVDV in different pig farms was significantly different by 0-24.07%. In view of the detection rate of diarrhea virus dominated by PEDV in pig farm 2 had been high in recent years, this study further monitored the infection of BVDV in this pig farm, and found that the detection rate of BVDV in this pig farm was increasing year by year from 2017 to 2019, with the highest detection rate in 2019 (8.61%, 42/488);The mixed infection of BVDV and other diarrhea pathogens was also serious, with the dual infection rate of 57.58% (19/32), triple infection rate of 21.21% (7/32), quadruple infection rate of 21.21% (7/32), respectively. This study enriched the epidemic data of BVDV in swinery in Shanghai, and could provide reference for the prevention and control of pig epidemics.

Pathogenic characteristics of severe acute respiratory infection in adult inpatients in Yangpu District, Shanghai, 2019-2021

Objective: To understand the pathogenic spectrum and epidemiological characteristics of severe acute respiratory infection (SARI) in adult inpatients in Yangpu District, Shanghai, China, in order to explore strategies for the prevention and treatment of respiratory infectious diseases. Methods: Individual cases were from adult inpatients with SARI in Yangpu District, Shanghai, China from January 2019 to July 2021. Their respiratory samples were collected for etiological pathogen testing. Results: A total of 681 SARI cases were enrolled for sampling and lab testing. Among them, 79.00% were aged 60 years and older, and 75.48% had confirmed chronic disease history. A total of 163 infection inpatients (23.94%) were positive for at least one pathogen. The pathogens identified most frequently were influenza A virus (6.75%), followed by rhinovirus/enterovirus (3.23%), parainfluenza virus (PIV) (2.79%), Mycoplasma pneumoniae (2.35%), coronavirus (CoV) (2.06%). The positive rates of adenovirus (AdV), human metapneumovirus (hMPV), respiratory syncytial virus and bocavirus were all less than 2%. Bacterial strains were identified in eleven SARI cases, including Staphylococcus aureus and Pseudomonas aeruginosa (4 strains), Klebsiella pneumoniae (3 strains). Legionella pneumophila was detected in 9 cases (1.32%) and Bordetella pertussis in 5 cases (0.73%). Two pathogens were co-detected from 11 cases, accounting for 1.62% of 163 positive cases. The most common co-detected pathogens were influenza A virus and other pathogens, accounting for 54.55% of the mixed infection. The positive rates of pathogens were not significantly different between less than 60 years old and over 60 years old groups except for Bordetella pertussis, adenovirus and Mycoplasma pneumonia(P < 0.05). Influenza virus had epidemic peak in winter and spring, but not in summer from 2019 to 2021. Conclusion: Various respiratory pathogens are detected from adult SARI cases. It is mainly influenza virus, with co-detected pathogens and rare pathogens. This study provides helpful information for targeted prevention and control measures including vaccination.

SARS-CoV-2 and Its Variants in Thrice-Infected Health Workers: A Case Series from an Italian University Hospital.

BACKGROUND: We described a SARS-CoV-2 thrice-infected case series in health workers (HW) to evaluate patient and virus variants and lineages and collect information on variables associated with multiple infections. METHODS: A retrospective analysis of clinical and laboratory characteristics of SARS-CoV-2 thrice-infected individuals was carried out in Verona University Hospital, concurrent with the ORCHESTRA project. Variant analysis was conducted on a subset of available specimens. RESULTS: Twelve HW out of 7368 were thrice infected (0.16%). Symptomatic infections were reported in 63.6%, 54.5% and 72.7% of the first, second and third infections, respectively. Nine subjects were fully vaccinated at the time of the third infection, and five had an additional booster dose. The mean time to second infection was 349.6 days (95% CI, 138-443); the mean interval between the second and third infection was 223.5 days (95% CI, 108-530) (p = 0.032). In three cases, the second and third infections were caused by the Omicron variant, but different lineages were detected when the second vs third infections were sequenced. CONCLUSIONS: This case series confirms evidence of multiple reinfections with SARS-CoV-2, even from the same variant, in vaccinated HW. These results reinforce the need for continued infection-specific prevention measures in previously infected and reinfected HW.

Enteritis in calves: anamnestic, clinical, diagnostic and therapeutic evaluations with special attention to enteropathogenic rotavirus and bovine coronavirus

Introduction: Neonatal calf diarrhoea is a multifactorial disease that sometimes leads to high economic losses. It can be fatal due to dehydration and acidosis and has been one of the main causes of calf mortality. Material and methods: This retrospective study considered calves of a maximum of 35 days of age and with a diagnosed infection with rotavirus and/or bovine coronavirus. We examined the clinical records of 156 calves that were referred to the University Clinic for Ruminants in Vienna. Results Calves that had been treated with antibiotics before admission to the Clinic had a higher risk of staying longer, suggesting either that these calves had a more serious illness or that antibiotic treatment was not indicated and so therapeutic success was not achieved. Twenty-three calves died or were euthanized at the Clinic. At the time of admission, they were younger than the surviving calves and they had a lower inner body temperature and a lower base excess at the first examination. The four most common pathogens in faecal samples were rotavirus, bovine coronavirus, Cryptosporidium parvum and Escherichia coli, which were detected in 67.1%, 53.9%, 48.1% and 94.1% of the faecal samples examined. The most common co-infection was rotavirus with Cryptosporidium parvum (17 faecal samples). We inspected the four most common pathogens in more detail. There were significant correlations between bovine coronavirus and season, with the risk of suffering from bovine coronavirus 1.6 times higher in winter than in other seasons. There was also a correlation between Cryptosporidium parvum and general behaviour: the risk of being infected with Cryptosporidium parvum was 2.6 times higher in calves that were moderately to severely depressed at the first examination. There was a correlation between co-infections and mortality, with calves with a co-infection at three times higher risk of dying than calves with a mono-infection.

Clinical outcomes of ICU patients with COVID-19-associated pulmonary aspergillosis: a systematic review and meta-analysis

OBJECTIVE: To systematically describe the outcomes of patients with COVID-19-associated pulmonary aspergillosis (CAPA). METHODS: All of the researches covering the clinical outcomes of CAPA were retrieved from databases such as ScienceDirect, PubMed, CNKI and MEDLINE (OVID) from Dec 31, 2019 to Dec 1, 2021. The literatures were screened out based on inclusion and exclusion criteria by 2 writers, the data were extracted, the quality of the literatures was evaluated, and meta-analysis was performed. RESULTS: Totally 14 cohort studies were included in this study, with 2 056 severe COVID-19 patients involved, including 338 CAPA patients and 1 718 non-CAPA patients. The incidence rate of CAPA was 16.4% among the ICU patients. As compared with the non-CAPA patients, the mortality rate of the CAPA patients was increased by 21% [risk difference (RD)]=0.21, 95% CI:0.15-0.27, (I-2=0%). No heterogeneity or publication bias was detected (t=1.98, P=0.069). Among the patients with underlying diseases, the patients with chronic obstructive pulmonary disease (COPD) were 2.37 times the risk of CAPA as high as the patients of the non-CAPA group (95% CI: 1.15-4.88, P=0.020). The creatinine level of the CAPA patients was higher than that of the non-CAPA patients (33.32 micro mol/L, 95% CI: 6.81-59.83, P=0.014). As compared with the non-CAPA patients, the patients who received renal replacement therapy were 2.33 times the risk of CAPA (95% CI: 1.43-3.80, P=0.001). CONCLUSION: 16.4% of the severe COVID-19 patients have CAPA, the mortality rate is high. COPD, serum creatinine and renal replacement therapy may remarkably increase the risk of CAPA, and it is suggested that a prospective screening of CAPA should be carried out for the severe COVID-19 patients.

Analysis of pathogenic bacteria, their drug resistance, and cytokines in 60 patients with a puerperal infection after a Cesarian section

Objectives: To investigate pathogenic bacteria, their drug resistance, and changes in levels of cytokines in patients with a puerperal infection after a Cesarean section.

Detection of co-infection of porcine circovirus and porcine epidemic diarrhea virus

In this study, 650 tissue samples which were collected from 16 pig farms in Hubei Province, were used to detect porcine circovirus (PCV) and Porcine epidemic diarrhea virus (PEDV). The results showed that the positive rates of PCV1, PCV2, PCV3 and PEDV single infection were 1.08%, 4.15%, 2.46% and 6.46%, respectively. In the double infections, PEDV+PCV2 had the highest positive rate of 3.54%, followed by PCV2+PCV3, with a positive rate of 1.54%. In multiple infections, PEDV+PCV2+PCV3 had the highest positive rate of 2.00%. The results indicated that the positive rates of PEDV and PCV were decreased compared with the previous studies, but the prevalence of PEDV and PCV was still wide in Hubei Province, and most of which were co-infection.

The relationship between viruses and clinical findings in hospitalized children diagnosed with acute lower respiratory tract infection

Objective: In this retrospective study, we aimed to identify viral agents in children hospitalized with ALRTI and to show the relationship between viral agents and clinical characteristics. Material and Methods: Two hundred and fifty five children (55.7% male) who were diagnosed with ALRTI and hospitalized between March 2016 and February 2017 were included in the study. Clinical characteristics of the patients who were examined to detect respiratory tract viruses with PCR analysis in nasopharyngeal swab samples were evaluated by using medical records. The patients were divided into three groups according to their age: under two years old, between 2-6 years old, and between 6-18 years old. Newborns were not included in the study.

Incidence, treatments, and outcomes of SARS-CoV-2 and HIV co-infections

Background: We investigated the global threat of co-infection of severe acute respiratory coronavirus 2 (SARS-CoV-2) to patients living with another prevalent viral infection HIV. We have analyzed symptom status, treatment, and outcome of co-infected individuals.

Effectiveness of anti-TB medicines in treating patients experiencing COVID-19 symptoms

Introduction: COVID-19, the life-threatening disease caused by the pathogenic SARS-CoV-2 virus, has limited treatment or measures for curing the infected persons. However, many antibiotics have been tried with varied results.

The effect of the vaccine against viral pneumoenteritis left-pointing-double-angle Bolshevak right-pointing-double-angle on the metabolism of cows

The problem of viral pneumoenteritis of young farm animals is relevant for agriculture of the Republic of Belarus. Today, the most effective method of preventing viral pneumoenteritis of calves is vaccination of pregnant cows. In case of mixed infections, the most effective means of preventing such diseases are polyvalent vaccines. But biological preparations should have not only high preventive effectiveness, but also not affect the quality of the final product. The author of the article studied the effect of a polyvalent inactivated culture vaccine against infectious rhinotracheitis, viral diarrhea, parainfluenza-3, respiratory syncytial, rotavirus and coronavirus infection of cattle left-pointing-double-angle BolsheVak right-pointing-double-angle on the state of metabolism of pregnant cows. For this purpose, 3 groups of pregnant cows of the Belarusian black-and-white Holstein breed were formed in the conditions of the Agricultural Republican subsidiary of the Ulishitsy Agro enterprise of the Gorodok district on the principle of pairs of analogues with10 animals in each group for 1.5-2 months before calving. The cows of the first experimental group were immunized with the vaccine against viral pneumoenteritis "Bolshevak" with the adjuvant ISA-15 intramuscularly into the croup area in compliance with the rules of asepsis and antiseptics in the volume of 5.0 cm3. Cows of the second experimental group were immunized with the vaccine against viral pneumoenteritis "Bolshevak" with the adjuvant ISA-25 - in the volume of 3.0 cm3. The cows of the control group were injected with isotonic sodium chloride solution according to a similar scheme. The animals were immunized twice with an interval of 21 days. The sampling was carried out before the start of the studies, on the 14th, 21st days after the first vaccination and on the 45th day after the revaccination. The clinical condition of the animals was monitored for 70 days. As a result of the research, it was found that the studied vaccine against viral pneumoenteritis does not have a negative effect on the general condition of the animal, does not cause allergic reactions, abortions, does not inhibit the synthesis of the studied biochemical parameters of the serum.

Outcome of patients with severe COVID-19 pneumonia treated with high-dose corticosteroid pulse therapy: a retrospective study

Objective: To assess the effectiveness of high-dose corticosteroid pulse therapy and evaluate possible factors associated with 28-day mortality in hospitalised patients with severe COVID-19 pneumonia.

Naturally occurring resistance-associated variants to NS3/4A protease and NS5A inhibitors in patients with HIV/HCV co-infection or HCV infection alone. (Theme Issue: Diagnosis and treatment of liver failure in children.) [Chinese]

Objective: To investigate the difference in naturally occurring resistance-associated variants (RAVs) between the patients with HIV/HCV co-infection and those with HCV infection alone by detecting the drug resistance loci associated with HCV NS3/4A protease and NS5A inhibitors.

Physicians' Approaches to Prophylaxis and Vaccination During the COVID-19 Pandemic: A Cross-sectional Survey Study from Turkey

Objective: Coronavirus disease 2019 (COVID-19) pandemic is a global health emergency. Physicians are at high risk for COVID-19 due to their occupational exposure to infected patients. In this study, we aimed to evaluate the opinions of physicians, who are at the forefront of the fight against the COVID-19 pandemic, on prophylaxis and probable vaccination for SARS-CoV-2 infection through a questionnaire.

Study on the etiological and clinical characteristics from 2 665 children with acute upper respiratory tract infections

This study aimed to evaluate the etiological and clinical characteristics of acute upper respiratory tract infections in children from GuangZhou, China. A total of 2 665 nose swabs specimen collected from children with acute upper respiratory tract infections from Zhujiang Hospital, Southern Medical University, Guangzhou, China during November 2009 to September 2015 were enrolled in this study. There were 1 566 virus positive responses were detected in samples from 2665 child patients with acute upper respiratory infections, with the positive rate of 58.8%. The positive rates were 22.5% for respiratory sycytial virus (RSV), 13.0% for rhinovirus (HRV), 9.0% for influenza virus (FLU), 7.6% for parainfluenza virus (PIV), 6.1% for adenovirus (AdV), 4.0% for human metapneumovirus (HMPV), 3.7% for human coronavirus (HCOV), 3.5% for human Bocavirus (HBOV). There was statistical significant in the detection rates of 8 respiratory viruses in different seasons, with the highest in spring, followed by summer and winter, and lowest in autumn. The respiratory virus infection rate of children gradually decreased with age, with a positive detection rate of 67.0% between children aged 0-3 years. And the respiratory virus detection rate of boys was significantly higher than that of girls. The co-infection rates were higher in child patients aged 0-3 years, and were higher during spring and summer than that of autumn and winter. Cough is the main clinical symptom of acute upper respiratory virus infection, followed by sputum and runny nose. The clinical symptoms are different in children between 8 respiratory virus infections. This study increases our knowledge of the etiological and clinical characteristics of these 8 common respiratory viruses among children with respiratory tract infections. Which might also provide relevant data to guide clinical treatment and prevention.

Detections of major respiratory pathogens in pneumonia patients in early phase of COVID-19 epidemic in Tongzhou, Beijing

Objective: To understand the infection status of major respiratory pathogens in pneumonia patients in the early phase of coronavirus disease 2019 (COVID-19) epidemic (January-March, 2020) in Tongzhou district of Beijing.

Clinical features and associated comorbidities in 200 cases of COVID-19 in Peshawar, Pakistan

SARS-CoV-2 is an emerging pathogen first reported in China and rapidly spreads throughout the world. The current study focused on the prevalence of symptoms, leukocytosis, leukocytopenia, thrombocytopenia, and comorbidity in patients resulted positive for COVID-19. About 200 patients were enrolled in the study first screened by ICT and then confirmed by RT-PCR. All the patients have symptoms fever, sore throat and dry cough. However 180 (90%) patients experienced tiredness, aches and pain all over the body in 193 (96%), diarrhea in 160 (80%), conjunctivitis in 64 (32%), headache in 177 (88%), loss of taste and smell in 49 (24%), a rash on skin, or discoloration of fingers or toes in 54 (27%), shortness of breath in 12 (8%), chest pain or pressure in 16 (8%), loss of speech and movement in 4 (2%) patients. 78 (39%) patients were found having co-infections including 23 (29.5%) patients have liver infection, 14 (17.9%) were kidney patients, 16 (20.5%) were heart patients and 25 (32%) were diabetic patients. Leukocytosis were found in 76 (97%) out 78 comorbid patients, while in only 2 (2.6%) non-comorbid patients had leukocytosis. Leukopenia were detected in 122 (61%) non-morbidpatients out of 200 COVID-19 patients. Thrombocytopenia were detected in 118 (59%) COVID-19 patients. The patients with previous cardiovascular diseases and other comorbid conditions may face greater risk of developing the disease into severe form. 51-60 years of individuals are at high risk of getting infection. The hematologic changes are associated with COVID-19 includes thrombocytopenia, leukocytosis, and leukocytopenia.