NEW DELHI: A recent climate-health projection released by the US-based Climate Impact Lab at the University of Chicago has sounded alarm bells across medical and environmental circles. The report predicts that a brewing "Super El Nino" could cause roughly 451,000 excess heat-related deaths globally through February 2027—including an estimated 15,800 additional fatalities in India. While domestic experts view the forecast as a critical early warning, they emphasize that India must urgently address systemic gaps in healthcare preparedness, worker protection, and mortality tracking.

The study estimates that out of the 15,800 projected excess deaths in India, approximately 7,400 could occur between December and February alone.

A Public Health and Emergency Care Crisis

Dr. Tamorish Kole, former president of the Asian Society for Emergency Medicine, stressed that extreme heat can no longer be treated as a mere seasonal weather hazard. Instead, it has evolved into a full-fledged public-health and emergency-care emergency.

"With a large share of the projected deaths expected between December and February, heat risk can no longer be seen as a summer-only problem. This calls for a fundamental shift in the medical response," Dr. Kole noted. He urged the healthcare framework to shift from reactive treatment to proactive anticipation—identifying vulnerable groups early, strengthening emergency departments, expanding hydration and cooling measures, and training medical professionals to manage heat-related illnesses swiftly.

"Heat Action Plans must become an integral part of routine public-health and emergency-care planning," he added.

Validating the Projections

While the projections serve as a useful warning framework, environmentalist Hussain Hishmi advised caution regarding the quantitative numbers until they undergo rigorous, independent peer review.

Hishmi pointed out that the methodology relies heavily on specific assumptions and does not yet account for localized variables such as rapid adaptation, housing conditions, income levels, humidity, air pollution, and night-time temperatures. Furthermore, he clarified that El Nino is not a direct cause of death; rather, it alters atmospheric circulation patterns, intensifying regional heatwaves that interact with human exposure and socioeconomic vulnerabilities.

Undercounting and Gaps in Warnings

Soumyo Dutta, a senior visiting fellow at IMPRI and former advisory board member of the UN Climate Technology Centre and Network, highlighted critical ground-level flaws in how India handles heat casualties.

According to Dutta, India severely undercounts heat-related deaths. When a vulnerable citizen or manual laborer succumbs to heatstroke in a hospital, the cause is often officially recorded as "heart failure."

Dutta also criticized the current warning systems, noting that the India Meteorological Department (IMD) primarily relies on air temperature rather than the composite Heat Index—which factors in humidity and solar radiation. Because warmer oceans pump more moisture into the atmosphere, the actual heat stress faced by outdoor manual laborers is significantly higher than basic temperature readings suggest.

"People who work outside are supposed to know what the Heat Index is at their workplace and whether it is safe or not to work," Dutta said. He advocated for micro-level monitoring at job sites, mandatory workplace shading, designated cool rooms, and clear protocols forcing work to halt under hazardous conditions with government financial backing.

The Way Forward

Experts agree that whether or not the precise figures in the Climate Impact Lab's model are fully realized, the underlying threats are real. Closing existing gaps in death registration, upgrading to Heat Index-based early warnings, and legally enforcing worker protections will allow India's health systems to transition from merely treating heat casualties to successfully preventing them.