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In 2020, adults over 65 were hit by 3.1 billion more days of heat wave exposure than in the 1986-2005 baseline average and the senior citizens from China, India, the US, Japan, and Indonesia were the most affected, a latest report from the Lancet said on 21 October 2021. Climate change is driving an increase in the frequency, intensity and duration of drought events, threatening water security, sanitation, and food productivity, with 19 per cent of the global land surface in 2020 affected by extreme drought in any given month, the 2021 Report of the Lancet Countdown on Health and Climate Change: Code Red for a Healthy Future, said.