Bird flu detected in two poultry workers in the UK

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Bird flu has been detected in two poultry workers in England, though there are no signs of human-to-human transmission, the UK Health Security Agency (UKHSA) has said.

The cases are believed to be linked to exposure to sick birds on a single poultry farm where the two people were known to have recently worked.

Neither worker suffered symptoms of infection and both cases were found during routine asymptomatic screening.

The UKHSA said the H5 virus had been detected in the two workers, but further sequencing would be carried out.

The first human case reported was detected with a swab put in the nose. Experts believe it is likely this worker may have inhaled the virus.

The second case is thought to be more complicated and it is unclear whether the person has suffered a genuine infection or whether they have inhaled the virus at work.

Further investigation is under way but precautionary contact tracing has been undertaken for this person, the UKHSA said.

Both people are now testing negative, the agency said, adding there is no evidence of person-to-person transmission.

The UKHSA said the cases do not change the level of risk to human health, which remains “very low to the general population”.

Professor Susan Hopkins, chief medical adviser at the UKHSA, said: “Current evidence suggests that the avian influenza viruses we’re seeing circulating in birds around the world do not spread easily to people.

“However, we know already that the virus can spread to people following close contact with infected birds and this is why, through screening programmes like this one, we are monitoring people who have been exposed to learn more about this risk.

“It remains critical that people avoid touching sick or dead birds and that they follow the Defra advice about reporting.”

Bird flu is a well-known infectious disease of poultry and wild birds.

Other animals have also been catching the illness, such as seals, otters, wild dogs and foxes. Animal cases have been reported in the UK and across the world.

The H5N1 virus is the most prevalent strain in circulation at the moment.

The UKHSA said people with the highest risk of exposure to infected birds are contacted daily to monitor for the development of any symptoms.

In the asymptomatic surveillance programme run by the UKHSA, poultry workers are asked to swab their nose and throat to check for flu during the 10 days after exposure.

In some cases they may also be asked to have finger prick blood tests to see if antibodies against avian flu are picked up.

Anyone in contact with a person with bird flu may also be tested. They may be offered antiviral drugs to protect themselves from infection and lessen the chance of passing it on.

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