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. 2018 Oct 18;8(10):e023263. doi: 10.1136/bmjopen-2018-023263

Figure 1.

Figure 1

Counts of enrollees and participants by epidemiological week and age group or pregnancy status (A: 6 months to 4 years; B: 5–64 years; C: ≥65 years; D: Pregnant). Each bar displays the number of participants (dark grey) out of the total number of enrollees (light grey) for each week.