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Figure 2 | Malaria Journal

Figure 2

From: Clustered local transmission and asymptomatic Plasmodium falciparum and Plasmodium vivax malaria infections in a recently emerged, hypoendemic Peruvian Amazon community

Figure 2

Schema of community in the passive and active surveillance study. Zungarococha is a suburban community approximately 5 kilometres (km) from Iquitos, Peru. Zungarococha is composed of four villages: Zungarococha town (ZG, N = 1293), Puerto Almendra (PA, N = 207), Ninarumi (NR, N = 472), and Llanchama (LL, N = 142). Passive case detection occurred in the MINSA health post. Active case detection first included a community survey in March, 2003. Then, from the P. falciparum infections detected in passive case detection or the community survey, at-risk regions were defined for each month April-July, 2003, based upon the location of the month prior's P. falciparum infections. The location of these P. falciparum infections were used to determine a 100-metre radius at-risk zone for the following month. In each month of April-July 2003, 27–39 sentinel houses (approximately 150 participants/month) were selected within each at-risk zone for one month of weekly prospective visits.

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Malaria Journal

ISSN: 1475-2875

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