But a new pandemic strain deriving from avian flu - if it emerged - would be different and far more dangerous.
Times, Sunday Times
The vaccine would not protect against a pandemic strain, for which a totally new vaccine would need to be produced at top speed.
Times, Sunday Times
A less transmissible virus, such as the 1957 pandemic strain, would affect 16.8 million.
Times, Sunday Times
It will also take between three and six months to design a vaccine against a pandemic strain.
Times, Sunday Times
The vac-cines would not be a precise match to the pandemic strain but are forecast to offer some protection.
Times, Sunday Times