Covid-19 is spreading faster and further in households than previously assumed:...

WASHINGTON: Household transmission of the novel coronavirus is high, rapid, and can come from both children and adults, according to a new study that examined 101 homes in the U.S.
Preliminary results of ongoing research, published in the journal Morbidity and Mortality Weekly Report, showed that 51 percent of other people who lived with someone who was positive for Covid-19 also became infected.
“We found that multiple infections were quickly discovered after a first household member became ill,” said Carlos G. Grijalva, co-author of the study and associate professor of health policy at Vanderbilt University Medical Center in the United States.
“These infections came on quickly, regardless of whether the first sick member of the household was a child or an adult,” said Grijalva.
According to the study, at least 75 percent of secondary household infections occurred within five days of the first person in the household showing symptoms.
It was also found that less than half of household members had symptoms when they first tested positive, and many reported no symptoms during the seven-day daily follow-up period.
“In the absence of an efficient approach to identifying infections without considering symptoms, these results suggest that imposing isolation measures immediately as soon as a person feels sick could reduce the likelihood of household transmission,” the researchers wrote in the study .
Citing the limitations of the study, the scientists said the original household member who started showing symptoms was considered the index patient in the study, while other household members may have been infected at the same time but developed symptoms or remained asymptomatic at different times.
However, the researchers believe the results still underscore the potential for transmission through symptomatic or asymptomatic contact with household members and the importance of quarantine.
“Because immediate isolation of people with Covid-19 can reduce household transmission, people who suspect they have Covid-19 should isolate, stay at home and use a separate bedroom and bathroom if possible,” said the Scientist.
“Isolation should begin before testing is done and before test results are available, as delaying isolation until infection is confirmed could miss an opportunity to reduce transmission to others,” they write in the study.

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