Flu? Moo!
Cattle could be breeding grounds for future flu outbreaks, according to researchers who are tracking emerging strains in animals in the hope of averting further human pandemics.
The last flu pandemic swept the globe in 1968, killing nearly half a million people. Flu viruses originate in wild birds and are become lethal when they cross into poultry or pigs. Then the viruses pick up genes that enable them to infect humans.
Ian Brown and his colleagues at the Veterinary Laboratories Agency in the U.K. believe that cows, too, could be harboring new strains of flu, because they have detected influenza genes in cattle for the first time.
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