LyrArc Article Gist
In this interview in The Hindu with Public Health Foundation of India president Srinath Reddy, the importance of safe behaviours including masks and social distancing, public discipline to tackle a potential third wave. This was also pointed out separately by the Director AIIMS. 

Mr. Reddy says study by Public Health England shows just one dose of Astra Zeneca vaccine is not very effective against the Delta variant- about 30% effective. As a result he suggests the need to reduce the spacing intervals which are at 8-12 weeks to a shorter interval now that adequate supplies of vaccine will be available starting in July and August till the end of the year. The initial spacing was 4 weeks when Astra Zeneca vaccine was first introduced and at which time the variants had not emerged. The Indian federal government affidavit to the Supreme Court shows that 1880 million doses of vaccine will be available by the end of the year 2021 to vaccinate fully with 2 doses the population of India over 18 years using 5 locally manufactured Made in India vaccines. This does not include the mRNA vaccines that will be made available from Moderna and Pfizer for which cold storage facilities are being prepared by the federal government.