Delhi Coronavirus Vaccine Update- दिल्ली में कब और कहां लगेगी कोरोना वैक्सीन, केजरीवाल ने दी जानकारी
Covid vaccine big update: Pfizer says vaccine over 90% effective | Oneindia News
Oneindia
Pfizer, BioNTech say their vaccine is more than 90% effective in late stage human trials, raising hope for a vaccine against the..
