Two more workers on California dairy farms have contracted highly-infectious avian influenza, bringing the total this year to 31 in that state.
And agriculture officials report the bird flu virus has been detected in 14 more dairy herds, bringing the total of infected cows to 475 in California and 689 nation-wide.
There have been no cases in Canada, although the virus has been deadly in lower mainland British Columbia where new outbreaks have been occurring almost daily since early November.
