Kiran Mazumdar-Shaw hits back at Karnataka CM Siddaramaiah for hinting COVID vaccines are behind heart attacks in Hassan
Kiran Mazumdar-Shaw criticized Karnataka CM Siddaramaiah's claims linking COVID-19 vaccines to heart attack deaths in Hassan.
Biocon Executive Chairperson Kiran Mazumdar-Shaw has strongly criticized Karnataka Chief Minister Siddaramaiah for suggesting that COVID-19 vaccines may be linked to a recent spike in heart attack-related deaths in Hassan district. Her comments came in response to a social media post by the Chief Minister, in which he appeared to raise questions about the safety of the vaccines.

In his post, Siddaramaiah revealed that over 20 individuals in Hassan district had died of heart attacks in the past month alone. While assuring the public that the government was treating the situation with utmost seriousness, he also raised the possibility that COVID-19 vaccinations might have contributed to these fatalities.
“Orders were given to this same committee back in February to conduct a thorough study on the reasons behind sudden deaths among young people in the state, and whether the COVID vaccines could have any adverse effects,” Siddaramaiah wrote.
“It cannot be denied that the hasty approval and distribution of the Covid vaccine to the public could also be a reason for these deaths, as several studies worldwide have recently indicated that COVID vaccines could be a cause for the increasing number of heart attacks,” he added.
READ | Karnataka orders probe as heart attacks rise in Hassan, 18 within a month
Reacting to these remarks, Kiran Mazumdar-Shaw issued a pointed rebuttal. “COVID-19 vaccines developed in India were approved under the Emergency Use Authorisation framework, following rigorous protocols aligned with global standards for safety and efficacy. To suggest that these vaccines were ‘hastily’ approved is factually incorrect and contributes to public misinformation," she replied.
“These vaccines have saved millions of lives and, like all vaccines, may cause side effects in a very small number of individuals. It is important to acknowledge the science and data-driven processes behind their development, rather than engage in retrospective blame,” she further wrote.
READ | Govt orders probe into Hassan cardiac deaths, vaccine link under lens
The expert committee’s findings are expected within the next ten days.
ABOUT THE AUTHORYamini C SYamini CS is a Senior Content Producer at Hindustan Times with nearly six years of experience in digital journalism. She is part of the India News desk, where she works on a wide range of stories cutting across civic issues, city-based developments, politics, governance, public policy, breaking news, trending topics, and international affairs that have an impact on India. Her role involves tracking fast-moving developments, verifying information from official and on-ground sources, and presenting news in a clear, accessible format for a digital-first audience. A significant part of her work includes handling live blogs during major news events, such as elections, court verdicts, political developments, civic disruptions, protests, weather-related alerts, and unfolding national or international incidents. Through live coverage, she focuses on timely updates to help readers follow complex stories as they evolve. Before moving to the broader India News desk, Yamini was associated with the Bengaluru desk at Hindustan Times, where she extensively covered urban governance, infrastructure, traffic and transport issues, weather events, public grievances, and civic administration in the city. This experience strengthened her grounding in city reporting and sharpened her focus on citizen-centric journalism. She began her career as a correspondent with Reuters after completing a postgraduate diploma in journalism from the Indian Institute of Journalism and New Media. Her early training instilled a strong emphasis on accuracy, sourcing, and news ethics, which continue to shape her reporting style. Outside of work, Yamini enjoys reading across genres, listening to music, and spending time with her family, which help her maintain balance in a fast-paced newsroom environment.Read More

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