Table 2.

Seroprevalence of Zika virus infection by country

	Number of sera tested	Seroprevalence (%)
Africa
West/Central Africa
Angola	5082	4.0
Benin	244	44.0
Burkina Faso	1897	53.3
Cameroon	5811	16.5
Central African Republic*	7657	10.8
Central African Republic†	908	27.1
Chad	140	1.4
Côte d'Ivoire‡	3006	24.7
Gabon	970	8.4
Gabon†	1276	32.4
Guinea-Bissau	1154	10.6
Liberia	527	4.7
Mali	2369	52.0
Niger	308	18.0
Nigeria§¶	15 122	6.8
Republic of the Congo	460	0.4
Senegal**	4734	39.3
Sierra Leone	899	6.9
Togo	1294	31.0
Africa, other
Burundi	623	1.4
Djibouti	91	2.2
Egypt	180	0.6
Ethiopia	1939	3.9
Kenya	3719	14.9
Madagascar	392	7.7
Mozambique	249	4.0
Republic of Seychelles	300	0.7
Somalia	477	19.7
Sudan††	109	0.0
Tanzania	1063	12.7
Uganda	4236	6.3
Asia
South Asia
India	197	16.8
Pakistan	43	2.3
East Asia
Hong Kong	235	4.7
Southeast Asia
Indonesia	323	33.7
Malaysia	340	43.5
Malaysia†	358	49.2
Philippines	153	12.4
Thailand	50	16.0
Vietnam	50	4.0
Europe
Spain	1738	2.9
World
Total across all countries	70 723	15.7

*Excludes one article for which seroprevalence could not be calculated.²⁸

†Data that were estimated from graphs in the articles reviewed.^{34 78 89}

‡Reports results of NT for sera that were tested with multiple test modalities.²¹

§Possibly reports duplicate results of 294 sera, including 89 that tested positive.^{68 86}

¶Reports results from the more recent test for individuals tested twice.⁶⁹

**Reports results of IP for sera that were tested with multiple test modalities.²²

††Reports results of NT for sera that were tested with multiple test modalities.²³