Substance use and HIV-risk behaviors among HIV-positive men who have sex with men in China: repeated measures in a cohort study design.

Global literature revealed that seropositive men who have sex with men (MSM) posed an even higher risk compared to their seronegative counterparts. Identifying risk factors that contribute to HIV-risk behaviors will help to curb the rapid HIV transmission among this group. Our hypothesis was that MSM with substance use were more likely to conduct HIV-risk behaviors, even after accounting for repeated measures.

Consumption and sources of dietary salt in family members in Beijing.

In China, few people are aware of the amount and source of their salt intake. We conducted a survey to investigate the consumption and sources of dietary salt using the "one-week salt estimation method" by weighing cooking salt and major salt-containing food, and estimating salt intake during dining out based on established evidence. Nine hundred and three families (1981 adults and 971 children) with students in eight primary or junior high schools in urban and suburban Beijing were recruited.

[Investigation on measles cases of new genotype D8 in Beijing, 2013].

Objective: To investigate the epidemiological characteristics of measles cases of new genotype D8 in Beijing from January to June, 2013.

Methods: Epidemiological survey and descriptive analysis was conducted.

Results: 661 suspected measles were reported from January to June, 2013.