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Table 2 Seroprevalence to P. vivax and P. falciparum at quarterly surveys

From: Using health facility-based serological surveillance to predict receptive areas at risk of malaria outbreaks in elimination areas

 Quarter 1
(May–July)
Quarter 2
(August–October)
Quarter 3
(November–January)
Quarter 4
(February–April)
Number positiveSeroprevalence% (95% CI)Number positiveSeroprevalence % (95% CI)Number positiveSeroprevalence % (95% CI)Number positiveSeroprevalence % (95% CI)
P. vivax
 Age group
  1–15 years old4412.1 (8.0–17.8)2411.2 (7.6–16.2)2617.6 (12.2–24.6)910.5 (5.5–18.9)
  > 15 years old101441.0 (38.9–43.1)100050.1 (47.9–52.3)90641.6 (39.6–43.7)91841.8 (39.8–43.9)
  All ages105838.8 (36.8–40.8)102446.3 (44.2–48.3)93240.1 (38.2–42.1)92740.7 (38.7–42.7)
P. falciparum
 Age group
  1–15 years old63.4 (1.6–7.5)83.7 (1.9–7.3)53.4 (1.4–7.9)11.2 (0.2–7.8)
  > 15 years old40518.8 (17.3–20.6)52126.1 (24.2–28.1)48922.6 (20.9–24.4)50423.0 (21.3–24.8)
  All ages41117.7 (16.2–19.3)52923.9 (22.2–25.7)49421.4 (19.8–23.1)50522.1 (20.5–23.9)