India, July 3 -- After Karnataka chief minister Siddaramaiah linked the recent heart attack deaths in Hassan district to the Covid-19 vaccines, Covishield's maker, Serum Institute of India, has denied such a connection and said that it is "safe and scientifically validated".

The vaccine maker has backed the statement given by the ministry of health, which cited two large-scale studies by ICMR and AIIMS to affirm that no links have been found between Covid-19 vaccines and sudden deaths.

"In light of recent concerns, we affirm: Two large-scale studies by ICMR and AIIMS, as cited by the Ministry of Health (@MoHFW_INDIA) have found no link between COVID-19 vaccines and sudden deaths. The vaccines are safe and scientifically validated," SII ...