Cross-sectional study on the use of masks among occupational groups with high-risk positions for overseas import and pollution transmission / 中华劳动卫生职业病杂志

Objective: To investigate the wearing of masks and the knowledge of masks among high-risk positions for overseas import and pollution transmission. Methods: From May 14 to 17, 2022, a convenient sampling method was used to conduct an online survey among 963 workers in high-risk positions for overseas import and pollution transmission in Beijing. The behaviors of individual use and wearing masks, the distribution and supervision of the unit, the knowledge of personal mask protection and the subjective feelings of wearing masks were analyzed. The χ(2) test and logistic regression model were used to analyze the influencing factors of the correct selection of masks. Results: The majority of the workers in high-risk positions for overseas import and pollution transmission were male (86.0%, 828/963), age concentration in 18-44 years old (68.2%, 657/963), and the majority of them had college or bachelor degrees (49.4%, 476/963). 79.4%(765/963) of the workers chose the right type of masks, female, 45-59 years old and high school education or above were the risk factors for correct selection of masks (P <0.05). Workers had good behaviors such as wearing/removing masks, but only 10.5% (101/963) could correctly rank the protective effect of different masks. 98.4% (948/963) of the workers believed that their work units had provided masks to their employees, and 99.1% (954/963) and 98.2%(946/963) of them had organized training and supervision on the use of masks, respectively. 47.4%(456/963) of the workers were uncomfortable while wearing masks. Conclusion: The overall selection and use of masks among occupational groups in high-risk positions for overseas import and pollution transmission in China need to be further standardized. It is necessary to strengthen supervision and inspection on the use of masks among occupational groups, and take improvement measures to improve the comfort of wearing masks.

Epidemiological analysis and countermeasures discussion on imported ma-laria in Zhangjiagang City / 中国血吸虫病防治杂志

Objective To analyze the epidemiological characteristics of imported malaria in Zhangjiagang City. Methods The epidemiological data were collected and retrospectively analyzed for the distribution,cost,and exit-entry mode and port of imported malaria cases in Zhangjiagang City from 2005 to 2015. Results There were 25 imported malaria cases in Zhangjia-gang City from 2005 to 2015,and among them,there were 16 cases of falciparum malaria(64％),6 cases of vivax malaria (24％),and 3 cases of ovale malaria(12％);there was 1 cases of critically ill(4％),there were 8 cases of serious ill(32％) and 16 cases of mild ill(64％). The time of onset was in accordance with the circular distribution. The peak of the incidence of the imported malaria was one month earlier than that of the domestic infection. The seasonal peak was gentle ,and there was also the occurrence in the non-epidemic season in the city. The imported malaria patients were mainly from Africa ,followed by South-east Asia and Oceania. Conclusion The information technology should be applied to improve the key population coverage on the basis of improving the ability of malaria diagnosis and treatment of medical staff and the multi-sector 's cooperation for the im-ported malaria prevention and control in Zhangjiagang City.