In recent decades, the worldwide burden of infectious disease has fallen, thanks to sanitation, hygiene, and prevention and control efforts. But the covid-19 pandemic shows how great a threat to global health remains – particularly as the climate crisis continues to affect disease spread and our response in myriad ways. Increasing temperatures are expanding the areas where diseases such as malaria and dengue thrive. More flooding and drought increases disease risk. Hygiene requires access to clean water. Further urbanization and migration related to climate change will also complicate prevention and control. The BMJ has published “The time is now” collection, calling for the strengthening of the global response to climate change and communicable disease. https://www.bmj.com/communicable-dise…