Studies conducted by the Indian Council of Medical Research (ICMR) and the National Centre for Disease Control (NCDC) have established that there is no direct link between Covid-19 vaccination and sudden deaths in the country. According to a press release issued by the Union Ministry of Health and Family Welfare, cases of sudden and unexplained deaths have been investigated through multiple agencies in the country.
These studies have concluded that there is no direct link between Covid-19 vaccination and sudden deaths. Studies conducted by ICMR and NCDC confirm that Covid-19 vaccines in India are safe and effective, and cases of serious side effects are extremely rare.
#HealthForAll
— Ministry of Health (@MoHFW_INDIA) July 2, 2025
Extensive studies by @ICMRDELHI and AIIMS on sudden deaths among adults post COVID have conclusively established no linkage between COVID-19 vaccines and sudden deaths
Lifestyle and Pre-Existing Conditions identified as key factorshttps://t.co/QEN1X1PKfv
Sudden cardiac deaths can result from a wide range of factors, including genetics, lifestyle, pre-existing conditions, and post-COVID complications. As per the release, the ICMR and NCDC have been working together to understand the causes behind sudden unexplained deaths, especially in young adults between the ages of 18 and 45 years. To explore this, two complementary studies were undertaken using different research approaches one based on past data and another involving real-time investigation.
The first study, conducted by ICMR’s National Institute of Epidemiology (NIE), was titled “Factors associated with unexplained sudden deaths among adults aged 18-45 years in India – A multicentric matched case-control study.” This study was carried out from May to August 2023 across 47 tertiary care hospitals in 19 states and Union Territories. It looked at individuals who appeared to be healthy but died suddenly between October 2021 and March 2023.
The findings have conclusively shown that COVID-19 vaccination does not increase the risk of unexplained sudden death in young adults. The second study, titled “Establishing the cause in sudden unexplained deaths in young,” is currently being conducted by the All India Institute of Medical Sciences (AIIMS), New Delhi with funding and in collaboration with ICMR. This is a prospective study aimed at determining the common causes of sudden deaths in young adults.
Early analysis of data from the study indicates that heart attacks, or myocardial infarction (MI), continue to be the leading cause of sudden death in this age group. Importantly, no major changes in the pattern of causes have been observed when compared with previous years. In majority of the unexplained death cases, genetic mutations have been identified as a possible cause of these deaths.
The final results will be shared once the study is complete, the press release said. Together, these two studies offer a more comprehensive understanding of sudden unexplained deaths in young adults in India. It has also been revealed that COVID-19 vaccination does not appear to increase the risk, whereas the role of underlying health issues, genetic predisposition and risky lifestyle choices does play a role in unexplained sudden deaths.
Scientific experts have reiterated that statements linking COVID-19 vaccination to sudden deaths are false and misleading and are not supported by scientific consensus. Speculative claims without conclusive evidence risk undermining public confidence in vaccines, which have played a crucial role in saving millions of lives during the pandemic.
Such unfounded reports and claims could strongly contribute to vaccine hesitancy in the country, thereby adversely impacting public health. The press release added that the Government of India remains committed to evidence-based public health research to protect the well-being of its citizens.
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