A global flu pandemic could kill 62 million people, experts have warned.
The 1918 pandemic claimed 50 million lives, and experts in The Lancet predict the toll today would be higher than this, despite medical advances.
The world’s poorest nations would be hardest hit, fueled by factors such as HIV and malaria infections, the Harvard University researchers believe.
Yet developing countries can least afford to prepare for a pandemic, which needs to be addressed, they say.
Killer strain
Lethal global flu epidemics tend to occur three or four times a century.
Some scientists believe a new one may be imminent and could be triggered by bird flu.
So far there have been only 258 cases of the latest strain of avian flu, H5N1, recorded in humans.
But the fear is that this strain could mutate and spread quickly and easily between people, triggering a deadly pandemic.