The Covid vaccination programme is set to start for the 12-14 age group from February-end, Dr N K Arora, chairman of the Covid-19 working group of the National Technical Advisory Group on Immunisation told TOI on Sunday. Adolescent vaccination is making impressive strides across the country.The Covid vaccination programme is set to start for the 12-14 age group from February-end, Dr N K Arora, chairman of the Covid-19 working group of the National Technical Advisory Group on Immunisation told TOI on Sunday. Adolescent vaccination is making impressive strides across the country.