The Centre has issued a 'Letter of Comfort' to Bharat Biotech for 45 lakh more doses of Covaxin vaccine, sources said on Tuesday. Out of those 45 lakh doses, the city-based vaccine maker will be supplying over 8 lakh doses of Covaxin to some of the friendly countries such as Mauritius, Philippines and Myanmar, free of cost as "good will gesture". Sources also said that the company will be dispatching 20 lakh doses of the earlier order in a couple of days.