First Case of H5N8 Avian Flu Detected in Humans, Russia Says

In televised remarks, the head of Russia's health watchdog Rospotrebnadzor, Anna Popova, said scientists at the Vektor laboratory had isolated the strain's genetic material from seven workers at a poultry farm in southern Russia, where an outbreak was recorded among the birds in December.

The workers did not suffer any serious health consequences, she added.

"Information about the world's first case of transmission of the avian flu (H5N8) to humans has already been sent to the World Health Organization,", Popova said.

There are different subtypes of avian influenza viruses.

While the highly contagious strain H5N8 is lethal for birds it has never before been reported to have spread to humans.

Popova praised "the important scientific discovery," saying "time will tell" if the virus can further mutate.

"The discovery of these mutations when the virus has not still acquired an ability to transmit from human to human gives us all, the entire world, time to prepare for possible mutations and react in an adequate and timely fashion," Popova said.

People can get infected with avian and swine influenza viruses, such as bird flu subtypes A(H5N1) and A(H7N9) and swine flu subtypes such as A(H1N1).

According to the WHO, people usually get infected through direct contact with animals or contaminated environments, and there is no sustained transmission among humans.

H5N1 in people can cause severe disease and has a 60 percent mortality rate.

Russia registered coronavirus vaccine Sputnik V in August, months before Western competitors and even before large-scale clinical trials.

After initial scepticism in the West, The Lancet journal this month published results showing the Russian vaccine—named after the Soviet-era satellite—to be safe and effective.

Avian flu has raged in several European countries including France, where hundreds of thousands of birds have been culled to stop the infection.