Epidemiological analysis and risk prediction of scrub typhus from 2006 to 2021 in Sichuan, China.

Background: In the past decade, the number of reported cases of scrub typhus (ST) has increased dramatically in Sichuan Province. We aimed to overview the epidemiological characteristics of ST, identify the variables contributing to the spatial distribution, and estimate the risk areas of ST occurrence. Methods: Daily ST cases reported at the county level from 2006 to 2021 and datasets on environmental and socioeconomic variables were obtained. Joinpoint regression model was utilized to examine the incidence trends and to calculate the annual percentage change. Global spatial autocorrelation analysis was employed to explore the spatial temporal patterns. Then BRT model was employed to identify variables that make sense and predict the risk areas of ST occurrence. Result: It has been reported that there were 6,338 ST cases in Sichuan Province from 2006 to 2021, and the incidence rates continued to rise. Most cases were distributed between June and October each year, peaking in August. During the study period, the cases showed spatial clustering at the county level, mainly in the Panxi area, and then slowly spread to the northwest and northeast. Shrubs, precipitation, farmland and maximum temperature were the primary variables that affected the spatial distribution of this disease. It was estimated that the areas including Liangshan, Panzhihua, Bazhong, and Guangyuan were most at risk of transmission. and there were approximately 32.315 million people living in the areas with potential risk of infection throughout Sichuan. Conclusion: Many counties in Sichuan Province were estimated to be susceptible to ST. Our found in this data-driven study could be used to guide the implementation of targeted prevention and control measures in high-risk areas.

Spatio-temporal analysis of bacillary dysentery in Sichuan province, China, 2011-2019.

BACKGROUND: Bacillary dysentery (BD) is a common infectious disease in China and causes enormous economic burdens. The purpose of this study was to describe the epidemiological characteristics of BD and to identify its possible hot spots and potentially high-risk areas in Sichuan province of China. METHODS: In this study, we collected monthly BD incidence reports of 181 counties in Sichuan province, China, from January 2011 to December 2019. Descriptive statistics were used to evaluate the epidemic characteristics of BD. Moran's I index was applied to investigate the yearly patterns of the spatial distribution. And spatio-temporal scanning statistics with the spatial unit set as county and the temporal unit set as month were used to investigate the possible high-risk region. Meanwhile, the circular moving windows were also employed in the spatio-temporal scanning to scan the study areas. RESULTS: The annual incidence of BD ranged between 16.13/100,000 and 6.17/100,000 person-years from 2011 to 2019 in Sichuan. The majority of the cases were children aged 5 years or younger. For the descriptive statistics, a peak from May to October was observed in temporal analysis, the epidemics were mainly concentrated in the northwest and southwest of Sichuan in spatial analysis. After 2016, the scope of BD significantly narrowed and severe epidemic areas were relatively stable. For the spatial autocorrelation analysis, a high global autocorrelation was observed at the county level, and the high-high clusters mainly distributed in the northwest and southwest of Sichuan. For the spatio-temporal scanning, the spatiotemporal clusters of BD occurred every year from 2011 to 2019. The most likely cluster areas mainly distributed in the southwest and northwest of Sichuan at the beginning, and then gradually concentrated in the southwest. The secondary cluster mainly concentrated in the northwest and its surrounding areas. Moreover, the 2nd secondary cluster was relatively small and mainly distributed in the central area. No clusters were noted in eastern Sichuan. CONCLUSIONS: Based on our current analysis, BD is still a common challenge in Sichuan, especially for counties in the southwest and northwest in summer and autumn. More disease prevention and control measures should be taken in such higher-risk susceptible areas at a certain time to allocate the public health resources rationally, and finally reduce the spread of BD.

Impact of genital warts on health related quality of life in men and women in mainland China: a multicenter hospital-based cross-sectional study.

BACKGROUND: Information on the health-related quality of life (HRQoL) of patients with genital warts (GW) in populations in mainland China is still limited. The aim of the study was to use a generic instrument to measure the impact of genital warts on HRQoL in men and women in this setting. METHODS: A multi-centre hospital-based cross-sectional study across 18 centers in China was conducted to interview patients using the European quality of life-5 dimension (EQ-5D) instrument; respondents' demographic and clinical data were also collected. RESULTS: A total of 1,358 GW patients (612 men, 746 women) were included in the analysis, with a mean age of 32.0 ± 10.6 years. 56.4% of the patients reported some problems in the dimension of Anxiety/Depression (highest), followed by Pain/Discomfort (24.7%) and Mobility (3.5%). The overall visual analogue scale (VAS) score of the study population was found to be 65.2 ± 22.0, and the EQ-5D index score was found to be 0.843 ± 0.129 using Japanese preference weights (the Chinese preference was unavailable yet). Patients with lower VAS means and EQ-5D index scores were more often female, living in urban area, and suffering multiple GW (all p values < 0.05), but the values did not differ notably by age (p values > 0.05). CONCLUSIONS: The HRQoL of patients with GW was substantially lower, compared to a national representative general population in China (VAS = ~80); the findings of different subgroups are informative for future GW prevention and control efforts.

Impact of human papillomavirus-related lesions on quality of life: a multicenter hospital-based study of women in Mainland China.

INTRODUCTION: To date, few studies using a human papillomavirus (HPV)-specific questionnaire have focused on the impact of quality of life (QoL) among women with HPV-related lesions in developing countries. METHODS: A multicenter, hospital-based survey was conducted from 2007 to 2008. Women 18 to 65 years old who had HPV-related lesions or underwent HPV-related screening interventions during the past 3 months were recruited and divided into 6 groups based on different diagnoses: (1) normal Papanicolaou (Pap) test result, (2) abnormal Pap test result without HPV test, (3) external genital warts (GWs), (4) precancerous cervical lesions (confirmed by histological diagnoses), (5) HPV positive (HPV+) after abnormal Pap test result, and (6) HPV negative (HPV-) after abnormal Pap test result. Psychosocial burdens were assessed by the HPV impact profile (HIP). The HIP contains 7 domains and 29 questions, and its scores reversely relates to the subjects' QoL. RESULTS: A total of 2605 eligible women were enrolled. Women with GWs had the highest mean HIP scores (52.2), followed by the group with precancerous cervical lesions (48.6), HPV+ after abnormal Pap (45.8), abnormal Pap test result without HPV test (44.1), HPV- after abnormal Pap (43.1), and women with normal Pap endured the least (33.1). "Sexual impact," "self-image," and "control/life impact" were the 3 QoL-related domains that affected women the most. The psychosocial burden of urban residents was heavier than that of rural women. CONCLUSIONS: Women with GWs and precancerous cervical lesions had the worst psychological burden, and sexual-related concern was the primary cause of burdens regarding HPV-related diseases for Chinese women. In addition to basic medical treatments, psychosocial support systems should be established, and consultation services should be generalized to help alleviate these burdens.