China
Retrospective observational study
Medical records
497
The study included 105 index patients with SARS-CoV-2 RT-PCR positive test and a total of 392 eligible household contacts from the 105 family clusters
The median age of the index patients was 51 (25th to 75th percentile, 39 to 60 years) and 60 (57.1%) were male.
Total
2 Month
SARS COV-2 infection
64
SARS-CoV-2 RT-PCR positive test
Other
Exposure-period with infected persons in households
>1 day
0-1 day
Odds ratio
0.900 (0.610-1.330)
No
Yes
sex, age, relationship, quarantine, symptoms, exposure period
none
Average