Table 2.
Seroprevalence of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2)-specific immunoglobulin G (IgG) and IgM antibodies in Bangladesh, including Dhaka and outside Dhaka.
| Nationala | Dhaka |
Outside Dhaka |
|||||
|---|---|---|---|---|---|---|---|
| Non-sluma | Slumb | P-valuec | Urbana | Rurala | P-valued | ||
| Seropositivity, % (95% CI) | |||||||
| IgG | 30.4 (24–37) | 35.4 (24–47) | 63.5e (55–72) | <0.05e | 37.5 (29–46) | 28.7 (21–37) | >0.05 |
| IgM | 39.7 (33–46) | 26.5 (20–33) | 38.1 (29–47) | >0.05 | 45.1 (38–52) | 38.7 (31–47) | >0.05 |
| Geometric mean concentration (ng/mL, 95% CI) | |||||||
| IgG | 176 (164–189) | 250 (214–294) | 425 (281–642) | >0.05 | 246 (220–275) | 162 (142–184) | <0.05e |
| IgM | 355 (340–369) | 226 (205–248) | 307 (248–380) | <0.05e | 351 (328–376) | 360 (335–386) | >0.05 |
CI, confidence interval.
a
Weighted estimates.
b
Unweighted estimates.
c
Statistical analyses were performed between slum and non-slum areas of Dhaka.
d
Statistical analyses were performed between urban and rural populations outside of Dhaka.
e
P<0.05 was considered to indicate significance.