The UK Health Security Agency (UKHSA) reports detecting influenza A (H5) virus in two poultry workers in England.
Neither has experienced any symptoms of avian influenza and both have since tested negative.
Based on the timing of exposures and test results, one individual is likely to have had contamination of the nose and/or throat from material inhaled on the farm, while for the second individual it is more difficult to determine which is the case. Further investigation is under way but meanwhile precautionary contact tracing has been undertaken for this second individual.
The UKHSA has not detected evidence of human-to-human transmission and these detections do not change the level of risk to human health, which remains very low to the general population.
Professor Susan Hopkins, Chief Medical Advisor at 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.
Globally there is no evidence of spread of this strain from person to person, but we know that viruses evolve all the time and we remain vigilant for any evidence of changing risk to the population.
It remains critical that people avoid touching sick or dead birds, and that they follow the Department for Environment, Food and Rural Affairs (Defra) advice about reporting.
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