New Delhi: Dr. Nirmal Kumar Ganguly, Former Director General – Indian Council of Medical Research. In this column, Dr. Ganguly has answered questions regarding vaccine efficacy, mutant strains, and guided patients on how to deal with falling oxygen levels at home.

Of course, lying and breathing in the prone position is an effective way. For this, you start with sleeping face down from 30 minutes to two hours maximum, then shift to lying sideways for 30 minutes to two hours. Next, you sit up for 30 minutes to two hours maximum. Shift to lying sideways, this time the right side for duration not more than two hours, and then go back to lying down on your belly.

We may see Sputnik V in India once its import starts, followed by its local manufacturing here. The same would be the case with Johnson & Johnson vaccine as restrictions on it have been lifted in the US. If negotiations are successful, we may get another vaccine from Pfizer.