30 July 2021
covid-19-brazil-varyanti-more-contagious- ShiftDelete.Net

covid-19-brazil-varyanti-more-contagious- ShiftDelete.Net

COVID-19 Brazil variant, it can be much more contagious than others. P.1 coronavirus strain The mutant was first seen in Manaus, capital of the Brazilian state of Amazonas. The variant is known to have infected 37 countries so far.

An international team of researchers found evidence that the P.1 coronavirus variant, first seen in parts of Brazil, could be twice as contagious as previous variants. Scientists, Science He describes the review of the variant and the evidence in the article they published in the journal.

Antibodies fail to inhibit Brazilian variant

Initial research suggested that the Brazilian-origin mutant appeared late last year and began to spread in November. The variant, which quickly became the dominant species, infected many people in the country. During the initial period of infection, about 70 percent of the people in the city were believed to be infected. Following the rise of variant infections in Manaus, the P.1 variant soon spread to Brazil and then to other countries.


Researchers, molecular clock analysis discovered that the virus has 17 identifiable mutations, and three hedgehog mutations (N501Y, E484K and K417T) allow the virus to bind more tightly to human cells. Moreover, this variant with evidence of escaping antibodies is seen as worrying about contagiousness.

COVID-19 Brazil variant is transmitted 2 times more than previous strains

COVID-19 Brazil variant

In other studies, scientists simulated to determine how their abilities have changed since the virus mutated. Simulations, variant, virus 1.7 to 2.4 times more contagious than before showed that it was. Researchers have not yet been able to determine whether the increase is due to a longer stay of the virus in the body or an increase in viral load.

However, the researchers were unable to find data on whether the new variant is making people sick or more deadly. The research team found that among infections in Manaus, the likelihood of death from P.1 infection 1.2 to 1.9 times more than previous variants He suggests. The researchers point out one thing at this point; It is unclear whether this is due to more patients than the city can handle or if it is due to changes in the health system.

Scientists need further studies to determine whether the P.1 mutant actually infects people who have been infected or vaccinated from previous strains.

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