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The UK Health Security Agency (UKHSA) exists to protect people from health threats. We prevent and reduce the harm caused by infectious diseases, chemicals, radiation, the health effects of climate change and a range of envi…
UKHSA has issued its first amber heat-health alert of 2026, warning of increased risk to vulnerable people from high temperatures in the coming days.
Latest information on cases including British nationals.
Immunisation information for health professionals and immunisation practitioners.
Get support from your local health protection team (HPT) to prevent and reduce the effect of diseases and chemical and radiation hazards
The Green Book has the latest information on vaccines and vaccination procedures, for vaccine preventable infectious diseases in the UK.
This page advises those working with children on how to reduce the risks of hot weather to the health of people they provide care for. This is part of the guidance for the hazard: heat.
Information on how to stay safe in hot weather, including how to keep your home cool.
Notifiable diseases in humans that medical practitioners must report and how to report them.
One-page summary for health professionals and immunisation practitioners giving vaccinations.
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