US Could See Spike in Bird Flu Cases After Migration Season Birds may have spread the disease while migrating for breeding season over the spring. Jordan King Newsweek

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In spring, birds usually return to their breeding grounds, meaning they are making cross-country journeys, often stopping to take breaks along the way. The stopover locations can act as hotbeds for the spread of bird flu, especially if they are near farmland, where infected birds can leave contaminated saliva and feces, transmitting the disease to poultry animals.

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HHS advances plan to produce 4.8 million H5N1 vaccine doses Officials have identified a fill-and-finish opening on a production line at a vaccine company partner and said the activity won't disrupt the supply of seasonal flu vaccine. CIDRAP

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Dawn O'Connell, JD, said health officials have identified a manufacturing line at one of its manufacturing partners for fill-and-finish steps, without disrupting production of seasonal flu vaccine. Currently, the vaccine is in bulk form and will be produced in multidose vials.

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Avian flu is in cows in the US - is it inching closer to humans? The H5N1 strain of avian flu has been around since 1996, but until now its been largely confined to animals. But it has now jumped to cattle in America and some think it means we are inching towards eventual human-to-human infection, with potentially serious consequences. BBC News

... the (spread of the virus between states seems to be down to the movement of infected cows across state lines. ...

Reporting and surveillance of cattle movement in the US is poor compared with the UK and Europe where the BSE outbreaks of the mid-nineties led to all cows having to be tagged.

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