Every year on 17 April World Haemophilia Day is recognised worldwide to increase awareness of haemophilia, von Willebrand disease and other inherited bleeding disorders.

International Guide Dog Day is celebrated on the last Wednesday in April each year. It marks the establishment of the International Federation of Guide Dog Associations on 26th April 1989.

World Immunization Week, celebrated in the last week of April, aims to highlight the collective action needed and to promote the use of vaccines to protect people of all ages against disease.