The Serum Institute began mass-producing COVID vaccines even before approval. They've made millions of doses. But so far only about 4% of people in India are fully vaccinated. What went wrong? — Read on http://www.npr.org/sections/goatsandsoda/2021/06/29/1011022472/india-is-the-worlds-biggest-vaccine-maker-yet-only-4-of-indians-are-vaccinated