Table 3.

List of vaccines approved for their emergency use

Vaccine	Type	Shot	Age group	Adverse effects
Pfizer-BioNTech	mRNA vaccine	2 shots, 21 days apart	16 and older	Chills, pain, headache, tiredness, and swelling at the injection site
Moderna	mRNA	2 shots, 28 days apart	Adults 18 and older	Chills, pain, headache, tiredness, and swelling at injection site
Janssen	Viral vector	Single shot	Adults 18 and older	Fatigue, fever headache, injection site pain, or myalgia
Oxford-AstraZeneca	Viral vector	2 shots, 4–12 weeks apart	Adults 18 and older	Tenderness, redness, pain, warmth, itching, swelling at the injection site
Novavax	Protein adjuvant	2 shots, 3 weeks apart	12–84 years old	Pain at the site of injection, fatigue, and fever