India’s homegrown vaccine developer Bharat Biotech has warned people with weaker immunity and other medical conditions that include allergies, fever, or a bleeding disorder to consult a doctor before getting the shot — and if possible avoid the vaccine.

As the director of a large hospital in the Indian state that has seen the country’s most coronavirus cases, Dr. S.P. Kalantri had been waiting for the day a vaccine would be approved and bring protection not only to his community but also himself.

India authorised two COVID-19 vaccines on Sunday, paving the way for a huge inoculation program to stem the coronavirus pandemic in the world’s second most populous country.