摘要：Parasitological data for the years 1973-81 were examined to determine the years of “acceptable” or “normal” transmission of malaria, for every district of northern Thailand. The monthly mean number of cases and the mean plus 2 standard deviations (SD) were calculated for the selected years and plotted on log-linear graph paper. The resulting graphs were distributed to the Malaria Sector Offices. Sector Chiefs were then responsible for plotting the monthly observed number of cases of malaria as the data became available; if the observed incidence was more than 2 SD greater than the “normal” mean for that month, the Zone and Regional Malaria Offices were informed. Retrospective analysis of data from districts where malaria outbreaks had occurred indicated that the method provides an effective warning of impending epidemics. It is expected that the resulting earlier implementation of appropriate remedial control measures will lead to a reduction in malaria incidence in the region. Full text Full text is available as a scanned copy of the original print version. Get a printable copy (PDF file) of the complete article (1.2M), or click on a page image below to browse page by page. Links to PubMed are also available for Selected References . 107 108 109 110 111 112 113 114
