American physician and health economist at Stanford — co-author of the Great Barrington Declaration — director of NIH (2025–) — who challenged lockdown policies and argued for focused protection of the vulnerable rather than society-wide restrictions during COVID.
Creates the Great Barrington Declaration as the intellectual challenge to COVID lockdown consensus — Bhattacharya's argument (that lockdowns cause more harm than COVID in the population not at high risk, and that focused protection of the elderly is the optimal policy) became the primary alternative framework to the lockdown approach.
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