Nature: most often COVID-19 infections come from relatives

Nature: most often COVID-19 infections come from relatives

Chinese scientists have come to the conclusion that in public transport people are less likely to catch the coronavirus than at home.

A large-scale study of the spread of coronavirus SARS-CoV-2 in China has found that most people pick up a dangerous infection from relatives who live in the same house. As Nature writes, the study was conducted in Hunan province.

It was authored by scientists Cayun San from the National Institute of Health in Maryland and Hongjie Yu from Fudan University in Shanghai. They analyzed data from 1178 residents of Hunan province who were infected with coronavirus, as well as 15 thousand people with whom the infected people came into contact.

Thus, the researchers found that contacts between people living together represented the highest risk of coronavirus transmission. The second place is occupied by contacts between family members in the broad sense. At the same time, the risk of COVID-19 transmission was lower in the case of social contacts, for example, during a trip on public transport. Each additional day of interaction between people increased the risk of coronavirus infection by 10%.

The analysis also showed that strict quarantine in Hunan actually increased the spread of COVID-19 in families. Because people had to spend more time together at home than usual. But the spread of coronavirus between communities and through social interactions was greatly reduced during quarantine.

The authors concluded that the nature of coronavirus SARS-CoV-2 requires simultaneous efforts to isolate the infected and to quarantine all those with whom they had contact. In addition, intervention at the level of the entire population is necessary.