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The global death toll from Covid-19, which has passed five million, is already far worse than most other viral epidemics of the 20th and 21st centuries
Long-term exposure to air pollution may be linked to 15 percent of Covid-19 deaths globally, according to research that highlights the health risks posed by greenhouse gas emissions
How contagious is Covid-19 compared to other diseases? This graphic illustrates the number of people which are infected on average by a person suffering from a disease (e.g. measles, influenza, Ebola...).
Before the emergence of the new coronavirus, which has caused global alarm, other epidemics struck earlier this century but were less deadly than the previous century's pandemics