Oxford Vaccine Shot That Works Better In Smaller Doses Raises Questions

The news reached Sarah Gilbert Saturday evening that the Covid-19 vaccine she's developed with AstraZeneca Plc appeared to work. But the University of Oxford professor had expected a key number: Was...

source https://www.ndtv.com/world-news/oxford-vaccine-shot-that-works-better-in-smaller-doses-raises-questions-2329346