Pfizer,Johnson & Johnson vaccines more effective against Delta variant: Experts
NEW DELHI: The anti-COVID-19 vaccines by US pharma majors Pfizer and Johnson & Johnson (J&J) that are being used in...
Delta variant
Pfizer, AstraZeneca Covid-19 vaccines protect against Delta variant: Lancet study
LONDON: The Delta variant of coronavirus, first identified in India, doubles the risk of hospitalisation compared with the Alpha variant...
