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Fig. 1 | BMC Public Health

Fig. 1

From: A comparison of passive surveillance and active cluster-based surveillance for dengue fever in southern coastal Ecuador

Fig. 1

Flowchart of active and passive surveillance recruitment methods. Epidemiological information on dengue cases was obtained from an active surveillance (AS) research study and passive surveillance (PS) operated by the Ministry of Health in the dengue-endemic city of Machala, Ecuador, in 2014 and 2015. The diagram indicates the process by which data were obtained, the inclusion criteria, and duplicates from systems (n = 9) that were excluded

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