The US has a history of vaccination mandates, going back to the Revolutionary War under George Washington when all soldiers in 1777 were required to be vaccinated and Boston required the population to be vaccinated in 1809 for smallpox. Vaccine mandates were adopted during the measles, and diphtheria vaccination campaigns, and for other diseases. It is only through the mandates that these diseases were controlled. The coronavirus is no different as states and cities across the US take up mandated vaccination to avoid taking any risks with the fast spreading Delta variant.