Meteorologia

  • 18 MAIO 2024
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20º
MIN 13º MÁX 20º

H5N1 virus expands in the Americas due to climate change, says WHO

The H5N1 virus, which causes bird flu, is spreading rapidly across continents like the Americas due to factors such as climate change, a World Health Organization (WHO) expert admitted today.

H5N1 virus expands in the Americas due to climate change, says WHO
Notícias ao Minuto

21:44 - 24/04/24 por Lusa

Mundo OMS

"Climate change has impacted the migratory routes of birds, and this has played a role in the unprecedented spread of H5N1 in animals," Zhang Wenqing, who leads the WHO's Global Influenza Programme, said at a press conference.

The expert said that the 2.3.4.4b variant of the virus emerged in 2020, crossed the Atlantic to North America in 2021, and reached South America in 2022, causing multiple outbreaks in birds and mammals.

The WHO has recognized an "exponential increase" since 2020 in the number of infections in birds, as well as a growing number of affected mammals, including seals, mink, sea lions and foxes, and more recently, cattle and goats.

The recent detection of avian influenza outbreaks in cattle and goats in the United States, where a first case of cow-to-human transmission was identified, has raised concerns in the medical community about possible mutations of the virus, which, according to the WHO, has epidemic and pandemic potential.

On Monday, the WHO called for strengthening the global detection network for the H5N1 virus.

According to the WHO, increased surveillance should also extend to milk and dairy products.

Last week, the UN agency recommended consuming pasteurized milk after high concentrations of the H5N1 virus were found in cow's milk in the United States.

Read Also: More than 50 million lives saved in Africa thanks to vaccines (Portuguese version)

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