Operational efficiency of malaria control programme?
Ans. is 'd' i.e., Annual blood examination rate MEASUREMENTOFMALAR1A In the pre-eradication era, the magnitude of the malaria problem in a country used to be determined mostly from the repos of the clinically diagnosed malaria cases and the classical malariometric measures, e.g., spleen rate, parasite rate etc. On the other hand, during eradication era, the microscopic diagnosis of malaria cases became the main method of diagnosis and the parameters used are mostly parasitological in nature e.g., API, ABER, SPR and SFR. Measurements of malaria in the pre eradication era Spleen rate: Defined as the percentage of children between 2 & 10 years of age showing enlargement of spleen. Spleen rate is widely used for measuring the endemicity of malaria in a community. Av. enlarged spleen : A refinement of spleen rate , denoting the average size of spleen. Parasite rate Defined as on the percentage of children between the ages of 2 & 10 yrs showing malarial parsites in their blood films. Parasite density index Average degree of parasitimia Infant parasite rate Percentage of infants showing malarial parasites in their blood films. It is the most sensitive index of recent transmission of malaria in a locality. If the infant parasite rate is zero for three consecutive years in a locality, it is regarded as absence of malaria transmission even though, the Anopheline vectors responsible for previous transmissions may remain. Eradication Era Annual Parasite Incidence (API)* = (Confirmed cases during one year / population under surveillance) x 1000 Annual Blood Examination Rate = (No. of slides examined/population) x 100 ABER is an index of operational efficiency. In the modified plan of operation, the minimum prescribed is 10 percent of the population in a year. Annual falciparum index Slide positivity rate Slide positivity rate is the percentage of slides found positive for malarial parasite, irrespective of the type of species. Slide falciparum rate It is the percentage of slides positive for P. falciparum.
Infant parasite rate
Slide positivity rate
Mosquito bite rate
Annual blood examination rate