[News] WHO says people already vaccinated against COVID-19 can still infect others

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The agency asks to continue maintaining biosecurity measures such as the use of a mask, frequent hand washing and social distancing.

The chief scientist of the World Health Organization (WHO), Soumya Swaminathan, warned this Friday at a press conference that some people vaccinated against COVID-19 can still contract the virus, and even if they do not get sick, infect others .

"If you have the vaccine and you contract the disease, the viral load is much lower, so the chances of infecting others may also be lower," said the Indian expert.

Due to this possibility, and "until we know more, it is important that all people, even if they are vaccinated, continue to maintain biosecurity measures: use of a mask, frequent hand washing and maintaining a safe distance," continued Swaminathan.

Vaccines have been shown in most clinical trials to protect against the development of severe forms of the disease, but it is not certain that they will completely prevent infection.

"Our understanding of this is evolving as different studies come out," explained the scientist.

Studies are also being carried out on immunity after contracting COVID-19, as the World Health Organization has received information about people who have been re-infected with any of the new variants.

What is certain, according to Swaminathan, is that after an infection antibodies are obtained that last at least six months, and that cellular resistance also develops against possible infected cells, which although it is more difficult to measure, can last for years .