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广东省海丰县历史上是高疟区,1953年开始抗疟,1966～1974年连续9年发病率在1‰以下,1975～1976年发病率降至1/万以下,已连续11年控制疟疾;但于1977～1978年发生间日疟暴发流行.现报告如下. 暴发流行过程 1977年1～6月,全县仅有散发的疟疾病例。7月,县北部山林地区的朝面山水利工地疟疾病例数开始增加,10月中旬病例大量出现,11月达高峰,
Haifeng County, Guangdong Province, was historically a high-malarial area with antimalarial activity beginning in 1953 and a continuous 9-year incidence of 1 ‰ or less between 1966 and 1974, and its incidence dropped below 1 in 10,000 in 1975-1976. Malaria has been controlled for 11 consecutive years ; However, the outbreak of Plasmodium falciparum malaria occurred between 1977 and 1978. The report is as follows: Outbreak Epidemics From January to June 1977, there were only cases of malaria distributed throughout the county. In July, the number of malaria cases in Chaomianshan water conservancy construction site in the northern mountainous area of the county began to increase, with a large number of cases in mid-October and a peak in November,