Background
Methods
Study design and participants
Laboratory analyses and ELISA testing
Statistical analyses
Results
Study population
Bobo-Dioulasso | Ouagadougou | Fianarantsoa | Kumasi | |
---|---|---|---|---|
Recruitment period | 03.02.2021 – 11.03.2021 | 02.02.2021 – 13.03.2021 | 26.02.2021 – 18.06.2021 | 17.02.2021 – 10.05.2021 |
Screened households | 650 | 655 | 697 | 538 |
Informed consent obtained | 645 | 654 | 676 | 459 |
Number of households considered for analysesf1 | 627 | 522 | 674 | 340 |
Household demographics | ||||
Sex | ||||
% female | 318 / 627 (50·7%) | 276 / 522 (52·9%) | 308 / 674 (45·7%) | 137 / 340 (40·3%) |
Age (in years) /sex strata (n/N (%)) f2 | ||||
10 – 19, male | 101 / 627 (16·1%) | 41 / 522 (7·9%) | 97 / 674 (14·4%) | 30 / 340 (8·8%) |
10 – 19, female | 107 / 627 (17·1%) | 61 / 522 (11·7%) | 83 / 674 (12·3%) | 32 / 340 (9·4%) |
20 – 44, male | 153 / 627 (24·4%) | 145 / 522 (27·8%) | 187 / 674 (27·7%) | 53 / 340 (15·6%) |
20 – 44, female | 159 / 627 (25·4%) | 156 / 522 (29·9%) | 156 / 674 (23·2%) | 107 / 340 (31·5%) |
≥ 45, male | 55 / 627 (8·8%) | 60 / 522 (11·5%) | 82 / 674 (12·2%) | 54 / 340 (15·9%) |
≥ 45, female | 52 / 627 (8·3%) | 59 / 522 (11·3%) | 69 / 674 (10·2%) | 64 / 340 ( 18·8%) |
Crude serological SARS-CoV-2 status and previous testing for acute infections
Bobo-Dioulasso | Ouagadougou | Fianarantsoa | Kumasi | |
---|---|---|---|---|
n/N (%) | n/N (%) | n/N (%) | n/N (%) | |
Crude seropositivity | 317 / 627 (50·6)f1 | 170 / 522 (32·6)f2 | 253 / 674 (37·5)f3 | 131 / 340 (38·8)f4 |
No test for acute infection performed since onset of pandemic | 611 / 627 (97·4) | 493 / 522 (94·4) | 655 / 674 (97·2) | 322 / 340 (94·7) |
Test for acute infection performed prior to survey | 16 / 627 (2·6) | 29 / 522 (5·6) | 19 / 674 (2·8) | 18/340 (5·3) |
Positive results for acute infection among those tested | 2 / 16 (12·5) | 1 / 29 (3·5) | 4 / 19 (21·1) | 2/18 (11·1) |