Malaria Epidemiology

During a malaria surveillance program in a district endemic for Plasmodium falciparum, the epidemiologist needs to detect submicroscopic parasitemia (parasite density < 100/µL) in asymptomatic carriers to estimate the true burden of infection. Which investigation is most appropriate for this purpose?

Which is the most common Plasmodium species responsible for malaria in India?

A 38-year-old male labourer from rural Odisha presents to the Primary Health Centre with fever, chills, and headache for 3 days. Thick and thin blood smears are prepared and sent to the district laboratory for confirmation. While awaiting results, the patient develops severe thrombocytopenia (platelets 45,000/μL) and jaundice. What is the most appropriate immediate next step in management?

During a malaria surveillance visit to a tribal hamlet in Chhattisgarh, the health worker identifies 12 cases of P. vivax malaria within a 2-week period from a population of 800. The previous year, only 2 cases were reported from this hamlet. The cases are clustered in one neighbourhood with poor housing and stagnant water bodies nearby. What is the most appropriate immediate public health action?

In India, the malaria vector Anopheles stephensi is primarily found in which type of breeding habitat?