Table 1.

Types of COVID-19 vaccines[19,20,21,22]

Type of vaccine	Pfizer-BioNTech	Moderna	Oxford-AstraZeneca- SII	Bharat Biotech
Status in India	Pending approval	Not applied	CDSCO approved Emergency Use	CDSCO approved Emergency Use
Storage	70 Degree	-20 for 6 months	Regular fridge	Regular fridge
How it works	Messenger RNA	Messenger RNA	Recombinant Viral Vector Technology	Whole-Virion Inactivated virus
Efficacy	95%	95%	62-90%	Trial on going
Approved status outside India	FDA approved	FDA Approved	Approved in UK	Not applied
How many shots needed?	Two doses, 3 weeks apart	Two doses, 4 weeks apart	Two doses, a month apart	Two doses a month apart
What are the side effects?	Fatigue, headache, chills, muscle pain, especially after the second dose	Fever, muscle aches, headaches lasting a few days. Effects worse after second dose.	Fever, muscle aches, headaches lasting a few days.	Fever, muscle aches, headaches lasting a few days.
Recommendation	≥16 years	≥16 years	≥18 years	≥18 years

CDSCO=The Central Drugs Standard Control Organisation, SII=Serum Institute of India