Table. Characteristics of possible cases of SARS-CoV-2 reinfection, compared with all confirmed COVID-19 cases, France, 2 March 2021–20 February 2022.
| Possible cases of SARS-CoV-2 reinfection (n = 584,129) |
All confirmed cases of COVID-19 (n = 18,661,139) |
p valuea | |||
|---|---|---|---|---|---|
| n | %b | n | %c | ||
| Female | 324,253 | 55.6 | 9,862,846 | 53.4 | < 0.001 |
| Male | 259,325 | 44.4 | 8,623,428 | 46.6 | < 0.001 |
| Healthcare professional | 33,298 | 6.2 | 615,074 | 3.5 | < 0.001 |
| Symptoms reported | 274,508d | 51.3 | 8,831,873 | 51.3 | > 0.05 |
| Age group (years) | |||||
| < 18 | 137,915 | 23.6 | 5,052,111 | 27.1 | < 0.001 |
| 18–40 | 298,230 | 51.1 | 7,127,055 | 38.2 | < 0.001 |
| 41–60 | 116,799 | 20.0 | 4,495,255 | 24.1 | < 0.001 |
| 61–80 | 22,420 | 3.8 | 1,584,451 | 8.5 | < 0.001 |
| > 80 | 8,265 | 1.4 | 397,037 | 2.1 | < 0.001 |
COVID-19: coronavirus disease; SARS-CoV-2: severe acute respiratory syndrome coronavirus 2.
a p value of a two-sample binomial proportion test.
b Proportion among cases with available information. The percentage of missing values was 0.1% for the sex variable, 7.3% for healthcare professional status, 0.1% for the age variable and 8.3% for symptom reporting.
c Proportion among cases with available information . The percentage of missing values was 1.0% for the sex variable, 6.8% for healthcare professional status, < 0.1% for the age variable and 7.8% for symptom reporting
d Reporting symptoms at the time of sampling during the second episode of infection.