World Immunization Week 2023 - 24 to 30 April
World Immunization Week, celebrated in the last week of April, aims to highlight the collective action needed to protect people from vaccine-preventable diseases.
Under the theme of ‘The Big Catch-Up’, WHO is working with partners to accelerate rapid progress in countries to get back on track to ensure more people, particularly children, are protected from preventable diseases.
2023 is our global opportunity to catch-up on lost progress in essential immunization. We need to reach the millions of children who missed out on vaccines, restore essential immunization coverage to at least 2019 levels, strengthen primary health care to deliver immunization and build lasting protection in communities and countries.
The goal of World Immunization Week is for more children, adults – and their communities – to be protected from vaccine-preventable diseases, allowing them to live happier, healthier lives.