Question: What disease spreads the most?

Joey Shepherd answered on 26 Jun 2018:

That’s quite tricky, as there are many infectious diseases that spread quickly through a population. For example measles – if people aren’t vaccinated 90% of those will catch it if they come into conatct with it. And Malaria is a huge probem – it’s spread by mosquito bites in tropical regions and kills millions of people every year. Then there are things like Influenza (the ‘flu’ or the common cold, which are highly contagious because they are spread by coughs and sneezes which are difficult to contain!