[Effects of Interaction between PM2.5 and O 8-h max on Mortality of Cardiovascular Diseases in Chengdu].

Objective: To explore the health risks of the interactive effects between PM2.5 and ozone on cardiovascular mortality in Chengdu.

Methods: Daily data on the mortality of cardiovascular diseases, including data for both men and women, during 2014-2016 were collected.

Risk factors for developing severe COVID-19 in China: an analysis of disease surveillance data.

Background: COVID-19 has posed an enormous threat to public health around the world. Some severe and critical cases have bad prognoses and high case fatality rates, unraveling risk factors for severe COVID-19 are of significance for predicting and preventing illness progression, and reducing case fatality rates. Our study focused on analyzing characteristics of COVID-19 cases and exploring risk factors for developing severe COVID-19.

Association between moderately cold temperature and mortality in China.

Ambient air temperature is a key factor affecting human health. Adverse effects of extreme weather on mortality have been well explored and expounded in numerous epidemiological studies. The relationship between moderate temperature and mortality is, however, underexplored.

Disease burden of echinococcosis in Tibetan communities-A significant public health issue in an underdeveloped region of western China.

Echinococcosis is considered by the World Health Organization (WHO) to be a neglected zoonotic disease in the world. Some Tibetan communities were found to be highly endemic for echinococcosis just 20 years ago. Until recently, we were able to understand the overall disease burden of echinococcosis in Tibetan communities after prevalence data being available from nationwide investigations from 2012 to 2016.

Epidemiological survey of sheep as potential hosts for Leishmania in China.

Background: Leishmania parasites cause visceral leishmaniasis (VL), an important infectious disease that is endemic to large parts of the world and often leads to epidemics. Sand flies are the primary transmission vector for the parasite in endemic regions. We hypothesized that sheep might serve as an overlooked reservoir for Leishmania transmission to humans due to the asymptomatic nature of infection in many species.

A practical community-based response strategy to interrupt Ebola transmission in sierra Leone, 2014-2015.

Background: The Ebola virus disease spread rapidly in West Africa in 2014, leading to the loss of thousands of lives. Community engagement was one of the key strategies to interrupt Ebola transmission, and practical community level measures needed to be explored in the field and tailored to the specific context of communities.

Methods: First, community-level education on Ebola virus disease (EVD) prevention was launched for the community's social mobilizers in six districts in Sierra Leone beginning in November 2014.

Comparative evaluation of the diagnosis, reporting and investigation of malaria cases in China, 2005-2014: transition from control to elimination for the national malaria programme.

Background: The elimination of malaria requires high-quality surveillance data to enable rapid detection and response to individual cases. Evaluation of the performance of a national malaria surveillance system could identify shortcomings which, if addressed, will improve the surveillance program for malaria elimination.

Methods: Case-level data for the period 2005-2014 were extracted from the China National Notifiable Infectious Disease Reporting Information System and Malaria Enhanced Surveillance Information System.

Rapid assessment of knowledge, attitudes, practices, and risk perception related to the prevention and control of Ebola virus disease in three communities of Sierra Leone.

Background: The recent outbreak of the Ebola virus disease (EVD) in Sierra Leone has been characterized by the World Health Organization as one of the most challenging EVD outbreaks to date. The first confirmed case in Sierra Leone was a young woman who was admitted to a government hospital in Kenema following a miscarriage on 24 May 2014. On 5 January 2015, intensified training for an EVD response project was initiated at the medical university of Sierra Leone in Jui.

Random repeated cross sectional study on breeding site characterization of Anopheles sinensis larvae in distinct villages of Yongcheng City, People's Republic of China.

Background: Characterizing the breeding site of Anopheles sinensis is of major importance for the transition from malaria control to elimination in China. However, little information is available especially regarding the characteristics and influencing factors of breeding sites of An. sinensis in Yongcheng City, a representative region of unstable malaria transmission in the Huang-Huai River region of central China.

[Application and evaluation on five health education patterns of integrated control for parasitic diseases].

Objective: To explore the strategy of health education in demonstration plots for controlling the infections of soil-transmitted helminthes (STH) and Clonorchis sinensis.

Methods: Health education patterns including "raining", "irrigating", "spraying", "spring", "drop irrigating" patterns were conducted in demonstration zones. Before and after the health education, the questionnaire designed referring to the standard of KAP was carried out in residents and students.

[Effect of control on infections of soil-transmitted helminthes in demonstration plots of China for 3 years].

Objective: To explore the control strategies so as to provide the demonstration for controlling the infection of soil-transmitted helminthes (STH).

Methods: The program applied the strategies of health education intervention first, control of infection sources as the second, and carried out the treatment for the target people depending on their prevalence. Infection rates of STH, the awareness of relevant hygiene knowledge, practice in hygiene way, the usage of harmless toilets and safe water were compared with the baseline.

The abundance and host-seeking behavior of culicine species (Diptera: Culicidae) and Anopheles sinensis in Yongcheng city, People's Republic of China.

Background: The knowledge of mosquito species diversity and the level of anthropophily exhibited by each species in a region are of great importance to the integrated vector control. Culicine species are the primary vectors of Japanese encephalitis (JE) virus and filariasis in China. Anopheles sinensis plays a major role in the maintenance of Plasmodium vivax malaria transmission in China.

[Visceral leishmaniasis in China during 2004-2007].

Objective: To analyze the trend of visceral leishmaniasis incidence in China from 2004 to 2007.

Methods: Data of leishmaniasis in 2004-2007 were collected from the National Web-Based Infectious Diseases Report System, and statistically analyzed by using SPSS 12.0 software.

[Effect of PM2.5 collected during the dust and non-dust periods on the viability and gap junctional intercellular communication in human lung fibroblasts].

Objective: To investigate the effects of PM2.5 collected during the dust and non-dust periods on the viability and gap junctional intercellular communication (GJIC) in human lung fibroblasts.

Methods: Human lung fibroblasts were treated with PM2.