Table 1.
Characteristics of the index case and his family members.
| First positive nucleic acid test | Fully COVID−19 vaccination | Antibody testing results | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ct value | First time | Last time | ||||||||||
| Family member | Sex | Age* | Nationality | COVID−19 patient | Date | ORF1ab gene | N gene | Date | Results (S/CO) | Date | Results (S/CO) | |
| A | Male | 27 y | China | Yes | Oct 17, 2021 | 16.44 | 14.32 | Yes | Oct 19, 2021 | IgM: 3.59 (+); IgG: 0.13 (–) | Oct 28, 2021 | IgM: 11.28 (+); IgG: 6.29 (+) |
| B | Female | 27 y | Myanmar | Yes | Oct 18, 2021 | 30.86 | 30.26 | Yes | Oct 19, 2021 | IgM: 3.01 (+); IgG: 0.57 (–) | Oct 28, 2021 | IgM: 2.59 (+); IgG: 7.26 (+) |
| C | Female | 9 m | China | Yes | Oct 18, 2021 | 20.18 | 21.48 | No | Oct 19, 2021 | IgM: 0.01 (–); IgG: 0.07 (–) | Oct 31, 2021 | IgM: 1.98 (+); IgG: 1.56 (+) |
| D | Female | 2 y | China | Yes | Oct 24, 2021 | 14.99 | 13.86 | No | Oct 21, 2021 | IgM: 0.01 (–); IgG: 0.04 (–) | Nov 5, 2021 | IgM: 0.91 (–); IgG: 2.23 (+) |
| E | Female | 54 y | China | Yes | Oct 24, 2021 | 36.87 | 35.18 | No | Oct 21, 2021 | IgM: 0.03 (–); IgG: 0.04 (–) | — | — |
| F | Male | 53 y | China | No | — | — | — | Yes | Oct 21, 2021 | IgM: 0.11 (–); IgG: 12.43 (+) | — | — |
*
y, years; m, months.