According to the study, in case of giving the same vaccine dose or different dose with Covishield or Covaxin, booster with Covishield gives good results and produces better antibodies. It doesn’t even matter whether Covishield or Covaxin vaccines were given in the beginning. Immunity prepared by Covid vaccination starts to weaken over time and less protection is available from the new form. Because of this, the World Health Organization (WHO) has recommended a booster dose.
This study has been done by researchers from Christian Medical College, Vellore, Tamil Nadu and Center for Cellular and Molecular Biology, Hyderabad, Andhra Pradesh. Two vaccines widely used for primary vaccination in India, Covishield and Covaxin, studied the effect of similar or different boosters on the immunity system. These included participants who had already received two primary doses of these vaccines.
The study states that participants who had taken two doses of Covishield or Covaxin were given a dose of one of these two vaccines. Preliminary results showed an increase in antibodies 28 days after receiving a booster dose. No serious adverse effects were observed in any of the groups under trial.
Booster doses were studied on 200 participants who received the Covishield vaccine and 204 participants who received the Covaxin vaccine. The study found that giving the same vaccine dose with Covishield or Covaxin is safe. At the same time, better immunity is created when a separate booster is taken.