Coronavirus spread within households is common, and "substantial transmission" occurs from both children and adults, according to a report from the Centers for Disease Control and Prevention (CDC).
Health officials have been warning about virus transmission occurring inside homes. Dr. Deborah Birx, White House coronavirus task force coordinator, for instance, has warned that coronavirus-related closures of public places won’t stop virus spread in this phase of the pandemic, where at-home gatherings are contributing to cases, reported the Chicago Tribune.
Also, Dr. Allison Arwady, commissioner of the Chicago Department of Public Health, has said: “In fact where we see the spread of COVID-19 is where we let down our guard, where we literally let down our mask because we feel comfortable with those we love, but the virus is just looking for opportunities to spread."
In its latest report, the CDC assessed 101 households in Nashville, Tenn., and Marshfield, Wis., from April to September. The households included 101 index patients (or the believed source of infection) and 191 household contacts. These people took self-samples for the virus everyday for two weeks.
Over half (53%) of all household contacts were infected and “secondary infections occurred rapidly, with approximately 75% of infections identified within 5 days of the index patient’s illness onset,” the health agency wrote.
Younger index patients aged 12 to 17 years infected about 38% of household contacts, according to the data.
To lower the risk of virus spread at home, the CDC recommends isolating immediately upon coronavirus-like symptoms, testing positive, or testing due to high-risk exposure, whichever happens first. Also, everyone should wear masks in shared spaces at home.
Members of the same household should use separate bedrooms and bathrooms if possible, the CDC wrote. Finally, a significant number of infected people in the study were asymptomatic, which further emphasizes the importance of isolation, the agency wrote.