Covid vaccination programme has been started in January 2021.

In this programme,  Every person has to take two dose of the vaccine.

Now all adults (18+ populations) are eligible for the third dose of the vaccine.

The third dose known as  Covid precaution dose or booster dose.

 Covid Precaution dose is the third dose of the same vaccine.

The necessity of a third dose was felt worldwide with the emergence of newer 'XE' variants of the virus.

All those who are more than 18 years of age and have taken the second dose .....  

of the vaccine at least before 9 months are eligible for the precaution dose. 

The decision to open the third dose for all comes at a time when China is seeing a fresh surge in infections.

The booster dose will be available  at private vaccination centres from 10 April.

As per The Serum Institute of India (SII)  ...... 

Booster dose of Covishield will cost Rs 600 plus taxes in the market.