Two poultry workers tested positive for influenza A (H5) after coming into contact with contaminated farms. The two had recently worked on an infected poultry farm, the British Health Security Agency said.

They were both "asymptomatic" and "have since tested negative," the agency said. No evidence of human-to-human transmission has been provided, and the health risk "remains very low for the general population""Globally, there is no evidence of this strain spreading from person to person, but we know that viruses are constantly evolving," says expert.