Geneva, April 25 -- Immunisation efforts are increasingly at risk as misinformation, population growth, ongoing humanitarian crises, and funding cuts jeopardise progress and leave millions of children, adolescents, and adults at risk, warned WHO, UNICEF, and Gavi during World Immunisation Week (April 24-30).

Outbreaks of vaccine-preventable diseases such as measles, meningitis, and yellow fever are rising globally, and diseases like diphtheria, which have long been held at bay or virtually disappeared in many countries, are at risk of re-emerging.

In response, the agencies are calling for urgent and sustained political attention and investment to strengthen immunisation programmes and protect significant progress achieved in reducing ch...