Table 1 Demographic characteristics and positive rates of the serological and RT–PCR tests in different study populations
From: Seroprevalence of immunoglobulin M and G antibodies against SARS-CoV-2 in China
Population | Geographic region | n | Male, % | Median age, year (25th, 75th percentile) | IgG+ | IgM+ | IgG+ or IgM+ | PCR+ |
|---|---|---|---|---|---|---|---|---|
Hospital settings | ||||||||
Healthcare worker | Wuhan, Hubei | 714 | 17.0% | 32 (28, 39) | 27 (3.8%) | 6 (0.8%) | 27 (3.8%) | 5 (0.7%) |
Healthcare worker | Jingzhou/Honghu, Hubei | 3,091 | 28.6% | 35 (29, 47) | 37 (1.2%) | 4 (0.1%) | 41 (1.3%) | 10 (0.3%) |
Hemodialysis patient | Jinzhou/Honghu, Hubei | 979 | 57.4% | 57 (48, 67) | 19 (1.9%) | 19 (1.9%) | 35 (3.6%) | 5 (0.5%) |
Healthcare worker | Chongqing | 319 | 27.2% | 33 (28, 50) | 8 (2.5%) | 2 (0.6%) | 10 (3.1%) | NA |
Outpatient | Chongqing | 993 | 52.2% | 52 (36, 64) | 37 (3.7%) | 1 (0.1%) | 38 (3.8%) | NA |
Hemodialysis patient | Guangzhou/Foshan, Guangdong | 563 | 55.6% | 59 (47, 70) | 12 (2.1%) | 7 (1.2%) | 16 (2.8%) | 0 (0%) |
Healthcare worker | Guangzhou, Guangdong | 260 | 26.5% | 32 (27, 40) | 1 (0.4%) | 2 (0.8%) | 3 (1.2%) | 0 (0%) |
Subtotal | 6,919 | 36.9% | 41 (31, 56) | 141 (2.0%) | 41 (0.6%) | 170 (2.5%) | 20 (0.4%) | |
Community settings | ||||||||
Hotel staff membera | Wuhan, Hubei | 346 | 50.0% | 46 (37, 50) | 11 (3.2%) | 8 (2.3%) | 13 (3.8%) | 0 (0%) |
Healthcare worker relative | Wuhan, Hubei | 219 | 67% | 42 (31, 56) | 7 (3.2%) | 3 (1.4%) | 7 (3.2%) | 3 (1.4%) |
Community resident | Chengdu, Sichuan | 9,442 | 47.2% | 56 (40, 69) | 26 (0.3%) | 29 (0.3%) | 55 (0.6%) | 0 (0%) |
Factory worker | Guangzhou, Guangdong | 442 | 42.2% | 29 (25, 32) | 4 (0.9%) | 4 (0.9%) | 6 (1.4%) | NA |
Subtotal | 10, 449 | 47.7% | 50 (35, 49) | 48 (0.5%) | 44 (0.4%) | 81 (0.8%) | 3 (0.03%) | |
