A small number of people have died after being inoculated against H1N1 pandemic flu, but investigations have shown that the deaths are not due to the vaccines, a senior official at the World Health Organization said on Thursday.

No new safety issue has been identified from reports issued to date... Reporting so far reconfirms that the pandemic flu vaccine is as safe as the seasonal flu vaccine, WHO vaccine expert Marie-Paule Kieny told a teleconference.

Governments have so far reported that 65 million vaccines have been administered against H1N1, known as swine flu, but the true figure is probably higher, she said.