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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
Winter is coming to the northern hemisphere, and with it the flu season -- however advances spurred by the fight against Covid-19 are boosting hopes of finding a more reliable vaccine
The medieval Belgian city of Bruges has rounded up swans to shelter them from the spread of bird flu after an outbreak of the virus in France, Denmark and the Netherlands
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...).