The World Health Organization is now considering whether to advise the world's vaccine makers to switch from ordinary flu vaccine to the swine flu one. While a pandemic declaration is still probable, and the WHO gives the go-ahead, the swine flu vaccine will arrive too late for many.
Here's what the vaccine makers have to say:
"If we make ordinary vaccine and the pandemic comes instead, we will be blamed," says Norbert Hehme, chair of the industry's flu vaccine task force. "If we make pandemic vaccine and get ordinary flu, we will have a shortage of ordinary vaccine, so we will also be blamed."