The Indian Council of Medical Research has revealed that a mix of Covishield and Covaxin, the two main vaccines of India's Covid vaccination programme, can actually yield better results. The study was only conducted on 18 people of Uttar Pradesh's Siddharth Nagar, who by mistake received two doses of two separate vaccines. According to the finding of the study which is yet to be peer-reviewed immunisation with a combination of an adenovirus vector platform-based vaccine, followed by inactivated whole virus vaccine was not only safe but also elicited better immunogenicity. Covishield, manufactured by Pune's Serum Institute of India, is the adenovirus vector platform-based vaccine and Covaxin, developed and manufactured by Bharat Biotech and the ICMR, is the whole virus vaccine. Covishield and Covaxin belong to two different types.

The Indian Council of Medical Research has revealed that a mix of Covishield and Covaxin, the two main vaccines of India's Covid vaccination programme, can actually yield better results. The study was only conducted on 18 people of Uttar Pradesh's Siddharth Nagar, who by mistake received two doses of two separate vaccines. According to the finding of the study which is yet to be peer-reviewed immunisation with a combination of an adenovirus vector platform-based vaccine, followed by inactivated whole virus vaccine was not only safe but also elicited better immunogenicity. Covishield, manufactured by Pune's Serum Institute of India, is the adenovirus vector platform-based vaccine and Covaxin, developed and manufactured by Bharat Biotech and the ICMR, is the whole virus vaccine. Covishield and Covaxin belong to two different types.