Flu risk low

Tests have confirmed an outbreak of avian flu in chickens at a farm in southern England but officials described it as a ‘‘low severity’’ strain of the disease. Britain’s Department for Environment, Food and Rural Affairs said there was no link with a separate outbreak of bird flu detected at a duck breeding farm in November. The chickens at the farm in Hampshire are to be culled, and there is a one-kilometre ban on moving poultry around the farm.

UNITED STATES