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Malaria-attributable morbidity and transmission trends during 2008-2012 in Tripura, Northeast India. Pf, Plasmodium falciparum; ABER, Annual blood-smear examination rate; SPR, % smears positive for malaria parasite; API (annual parasite incidence), number of malaria cases per thousand population (Source: State Health Directorate of Tripura (unpublished data, personal communication).
