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Dr Kafeel Khan Profile picture
Dr Kafeel Khan
@drkafeelkhan
Hindustani Paediatrician ,Founder HealthForAll, DoctorsOnRoad, RT# Endorsement, Author-Manipal Manual of Clinical Paediatrics , THE GORAKHPUR HOSPITAL TRAGEDY
Jan 6, 2021 • 10 tweets • 3 min read
My thread on #CoronaVaccine controversy 👇
1/N- While Covishield developed in India by @SerumInstIndia with a master seed from Oxford-AstraZeneca's, @BharatBiotech developed #COVAXIN derived from a strain of SARS-CoV-2 virus, isolated at NIV, Pune, India. 2/N While Covishield is based on the virus’s genetic instructions for building th spike protein using double-stranded DNA added to adenovirus,COVAXIN is an inactivated vaccine (uses dead virus)

Approval of vaccine,undergoing phase-3 clinical trials, has raised serious questions.