[Evaluation of a pilot study on needle and syringe exchange program among injecting drug users in a community in Guangdong, China].

Objective: To evaluate the feasibility and effectiveness of needle and syringe exchange program among a community of injecting drug users (IDUs) on AIDS prevention.

Methods: A quasi-experiment design was used in a controlled community intervention study. Needle and syringe exchange program was implemented for 10 months in IDUs of an intervention community, including peer education and health education, provision of free needles and syringes, and collecting back of used needles and syringes by trained peer educators and local health workers, whereas no intervention measure in a control community was instituted.

[Investigation on acute nitrite poisoning in Yangjiang city, Guangdong province, China].

Objective: To determine the cause of acute poisoning occurred in a factory in Yangjiang city, Guangdong province.

Methods: In a cross-sectional study, interviews were conducted with the administrators of the factory and the local physician. A review was conducted on the water system used for industrial purposes and a separate system used by workers for drinking water.