1) Moderna

RNA Vaccine -[USA]

This vaccine has been developed by Moderna, in Cambridge, Massachusetts and funded by the National Institute of Allergy and Infectious Diseases( NIAID), which is part of the US National Institute of Health. All taking the vaccine should receive two doses at least 28 days apart.

2) AstraZeneca

Viral vector vaccine-[UK]

The chAd0*1 vaccine, developed by the university of oxford, has an efficiency of up to 90 % and has been granted emergency use authorisation by the European Medicines Agency as well as national regulators in the UK, Argentina, India, Mexico, Brazil and Pakistan. The gap between the two doses has now been increased to 4-8 weeks. 

3) Sinovac

Inactivated vaccine- [CHINA]

Sinovac conducted phase 3 trails involving volunteers in Brazil, Indonesia and Turkey. The chinese government has given the Sinovac vaccine emergency approval for limited use. The two doses should be given 21 days apart

4) Sputnik V

Inactivated vaccine -[RUSSIA]

The vaccine developed by Moscow's Gamaleya Institute, uses a cold- type virus, engineered to be harmless, a carrier to deliver a small fragment of the coronavirus to body. Unlike other similar vaccines, the Sputnik jab uses two slightly different versions of the vaccine for the first and the second dose- given 21 days apart.

5) Covaxin

Inactivated vaccine-[INDIA]

Covaxin is an inactivated vaccine which means that it is made up of killed coronaviruses, making it safe to be injected into the body. Bharat Biotech used a sample of the coronavirus, isolated by India's National Institute of Virology. The two doses are given four weeks apart. The vaccine has efficancy rate of 81%.

7) Pfizer

mRNA vaccine-[GERMANY]

BioNTech and Pfizer started testing its BNT162 vaccine in humans, initially in Germany. The vaccine has an efficiency rate of 95%. Pfizer released data on April 1 showing that the vaccine is highly effective six months after the second dose. People will likely need a booster dose within 12 months.