The head of the US effort to produce a coronavirus vaccine has said that the first immunisations could happen on December 11 or December 12. A Food and Drug Administration advisory committee is set to meet on December 10 to discuss Pfizer Inc's request for an emergency use authorisation for its developing Covid-19 vaccine. US drugmaker Pfizer Inc, which has developed a 95 per cent effective vaccine against coronavirus, is now seeking the emergency use tag from the US government for its dosage. Pfizer has said the emergency use tag could start the process early and the coronavirus vaccine doses could be available as early as next month. Watch this video to know more.