Global Health Days – immunity and community
24 April marks the start of World Immunization Week – an annual campaign first launched in 2012. The week is one of 8 WHO international public health events, which include those targeting major infectious diseases – World AIDS day, World Tuberculosis (TB) day, World Malaria day, and World Hepatitis Day. These infections share a few features with each other which mean they all will continue to be global health threats.