[ad_1]
According to a large-scale study analyzing data from India, a small percentage of those infected play a key role in the spread of the new coronavirus, SARS-CoV-2. The study also noted that children and young adults have a potentially greater role in the spread of the epidemic than previous studies have shown. Many patients do not infect anyone. The numbers speak for themselves: cite the MTI news at hvg.hu.
For a study published in the scientific journal Science, in which researchers from the School of Environmental Studies (PEI) of Princeton University, researchers from Johns Hopkins University and the University of California (Berkeley), and health professionals participate Tamil Nadu and Andhra Pradesh in Southeastern India. More than half a million cases have been studied in India to determine the route of the epidemic and the death rate. According to the largest contact research study to date, 84,965 confirmed coronavirus patients have been in contact with at least 575,071 people, among whom have been studied, the portal cites the news.
Ramanan Laxminarayan, PEI Principal Investigator, highlighted: A large-scale study shows that “super spread” plays a key role in the spread of the coronavirus epidemic, that is, when it spreads the virus to large numbers of infected people.
It was found that
71 percent of infected patients did not infect any contacts, and only 8 percent of those infected caused 60 percent of new infections.
The researcher emphasized that his study provided the largest-scale empirical justification for superdistribution to date. “Superdistribution is the rule rather than the exception when it comes to the spread of the coronavirus, both in India and probably in all affected areas,” said the researcher.
According to the study, in India, where the epidemic has so far caused more than 96,000 deaths, deaths occurred after an average of six days of hospitalization, while in the United States, deaths were treated in hospital for an average of 13 days. Most of the deaths in Covid-19 in India occurred in the age group 50 to 64 years, while in the United States, the group with the highest risk of death was greater than 60 in the study period.
The researchers also noted that the spread of the coronavirus has been significantly reduced due to nationwide quarantine regulations in India.
According to the study, the probability that a person infected with coronavirus, regardless of age, transmits the virus to a close contact is 2.6 percent in a community and 9 percent within a home.
Children and young adults, who accounted for a third of coronavirus cases, played a particularly important role in spreading the virus among the poor.
According to the results of the study, children are very effective transmitters of the virus, although previous research has not been able to establish it definitively. Reported cases and deaths were concentrated in younger age groups than expected from observations in higher-income countries.
Laxminarayan said.
Children and young adults were more likely to infect their peers of similar age, according to the study. According to the research, overall, relationships in the same age group greatly increase the chance of infection in all age groups, with the probability of contracting the coronavirus from low-risk and high-risk relationships ranging from 4.7 at 10.7 percent.
[ad_2]
