If a household member gets #COVID19, what’s your chance of getting infected from him?
Latest report from CDC (30 Oct 2020)
101 index patients and 191 household members were enrolled and completed ≥7 days of follow-up.
Percentage of index patients who spent > 4 hrs time in the same room with their household members:
69% index patients – day before symptom onset;
40% the day after illness onset.
Percentage of index patients who slept in the same room with their household members:
40% of index patients before illness onset;30% after illness onset.
102 of the 191 household members underwent PCR (swab/ saliva)
Transmission of SARS-CoV-2 within households is high, occurs quickly, and can originate from both children and adults.
Secondary infections occurred rapidly, with approximately 75% of infections identified within 5 days of the index patient’s illness onset.
The rates of symptomatic and asymptomatic #SARSCoV2 infections were 36% and 18%, respectively. Overall 54% from 101 households.
Prompt adoption of disease control measures, including self-isolating at home, appropriate self-quarantine of household contacts, and all household members wearing a mask in shared spaces, can reduce the probability of household transmission.