International guidelines
United Kingdom
Published by:UK Health Security Agency
Last published:2025
Published by:Department of Health and Social Care (UK)
Last published:2024
Published by:UK Health Security Agency
Last published:2022
Europe
Published by:Health Protection Surveillance Centre
Last published:2022
North America
Published by:Centers for Disease Control and Prevention
Last published:2024
Published by:Centers for Disease Control and Prevention
Last published:2023
Rest of the world
Published by:United Nations International Children's Emergency Fund
Last published:2021
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