Spatiotemporal variation of mortality burden attributable to heatwaves in China, 1979–2020

Hot weather lasting for several days,often referred to as a heat-wave,is a pervasive natural hazard that can impact heavily on the social-economy and health systems and is projected to increase dramatically in frequency,severity and duration in the context of climate change[1].Heatwave-related health effects are the most primary and direct threat of climate change on human health[2].Given that global warming and an aging population are already having a huge impact on Chinese society,and that the rapid urban-ization and migration since China's reform and opening-up in late 1978 have simultaneously amplified the impact of summer hot weather on health[3],it is necessary to understand the spatiotem-poral changes of disease burden from heatwaves across the country.