Conclusion Measures for the prevention and treatment of the epidemic involve inoculating children of the right age and high- risk population with hepatitis A vaccine to improve their immunity to the epidemic and strengthening health education and food hygiene management.
In order to strengthen the management for food hygiene, a survey of nitrite contents in 69 pieces of cooked meat products was made in 7 martlets in Chengdu from 1995 to 1996. The results showed that the nitrite contents were found in all the samples. The percentage up to the national food hygiene standard was 95. 6 %, with the range from 0. 1mg/kg to 20. 0mg/kg.
The coefficient of variation (CV) ranged from 34.2% to 116.2%. About 90.6% of the investigated schools set hygienic officials, and 71.9% formulated the measurements for public health emergencies. The results indicated that the schools in rural area were in lack of hygienic facilities and food supervision.