NEW DELHI : The third phase of vaccination against the coronavirus is likely to commence in March and will cover 27 crore people aged 50 years and above and those with co-morbidities, Health Minister Harsh Vardhan said in Lok Sabha on Friday.Replying to questions on vaccines and the vaccination drive against the coronavirus during the Question Hour, Vardhan said nearly five million people have been inoculated in the country so far.He added that the vaccination drive for frontline workers has begun this week."In coming days, 27 crore people who are of above 50 years of age and those under 50 with co-morbidities will be vaccinated," Vardhan said.The vaccination drive began on January 16, starting with healthcare workers and then the frontline.