Volume 23, Number 4—April 2017
Dispatch
Zika Virus Seroprevalence, French Polynesia, 2014–2015
Table
Zika virus seroprevalence among persons randomly recruited from the general population and among schoolchildren immediately after and 18 months after a Zika outbreak, French Polynesia, 2014 and 2015*
Sampled population, time of sampling, location of sampling | Median age (range), y | No. symptomatic/no. positive (% [95% CI]) | No. asymptomatic/no. positive (% [95% CI]) | Total no. seropositive/total no. tested (% [95% CI]) |
---|---|---|---|---|
General population | ||||
February–March 2014 | ||||
Society Islands | 47 (13–77) | 8/18 (44 [26–69]) | 10/18 (56 [33–79]) | 18/49 (37 [26–47]) |
Tuamotu Islands | 39 (7–86) | 12/22 (55 [34–75]) | 10/22 (45 [25–66]) | 22/49 (45 [38–52]) |
Marquesas Islands | 45 (10–82) | 16/28 (57 [39–75]) | 12/28 (43 [24–61]) | 28/49 (57 [47–68]) |
Austral–Gambier Islands | 38 (7–84) | 19/29 (66 [48–83]) | 10/29 (34 [17–52]) | 29/49 (59 [39–80]) |
Total |
41 (7–86) |
55/97 (57 [47–67]) |
42/97 (43 [33–53]) |
97/196 (49 [42–57]) |
September–November 2015 |
||||
Society Islands |
43 (4–88) |
73/154 (47 [40–55]) |
81/154 (53 [45-61]) |
154/700 (22 [16–28]) |
Schoolchildren | ||||
May–June 2014 |
||||
Society Islands | 11 (6–16) | 221/312 (71 [66–76[) | 91/312 (29 [24–34]) | 312/476 (66 [60–71]) |
*CIs were calculated taking into account the cluster sampling design (9) and using the Fisher exact test.
References
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