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Mixing Covaxin and Covishield: India's Drug Authority Gives Nod To Study, Trials

India's drug regulator has given permission to the Christian Medical College (CMC), Vellore to conduct a study on mixing two Covid-19 vaccines, Covaxin and Covishield.

Mixing Covaxin and Covishield: India's Drug Authority Gives Nod To Study, Trials
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Days after a study by the ICMR showed that combining Covishield and Covaxin elicited better immunogenicity than two doses of the same vaccine, India's drug regulator has now given the nod for a fresh study to be conducted on the same.

The study is to be conducted by the Christian Medical College (CMC), Vellore on to check the efficacy of mixing the two Covid-19 vaccines, Covaxin and Covishield, against the virus.

An expert panel of the Central Drugs Standard Control Organisation (CDSCO) on July 29 had recommended granting permission for conducting the study.

The trial will involve 300 healthy volunteers.

"The aim of the study is to assess the feasibility on whether a person can be given two different vaccine shots -- one each of Covishield and Covaxin -- to complete the inoculation course," a source said.

Separately, a recent study by the Indian Council of Medical Research (ICMR) involving 98 people, 18 of whom had inadvertently received Covishield as the first dose and Covaxin as the second in Uttar Pradesh, showed that combining these two COVID-19 vaccines elicited better immunogenicity than two doses of the same vaccine.

The study also found that immunisation with combination of Covishield and Covaxin was safe and the adverse effects were also found to be similar when compared to the same dose regimen.

(With inputs from PTI)

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