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Infectious Diseases

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Public Health England carries out a broad spectrum of work relating to prevention of infectious disease.

This work includes infectious disease surveillance, providing specialist and reference microbiology and microbial epidemiology, co-ordinating the investigation and cause of national and uncommon outbreaks, advising government on the risks of various infections and responding to international health alerts.

From 1 April 2013, HPA is part of Public Health England.



Norovirus is the most common cause of infectious gastroenteritis (diarrhoea and vomiting) in England and Wales. PHE posts regular reports about norovirus infection rates throughout the peak season.

›› Norovirus

Seasonal Influenza

Influenza occurs most often in winter and usually peaks between December and March in the northern hemisphere. Illnesses resembling influenza that occur in the summer are usually due to other viruses.


›› Seasonal Influenza


HIV continues to be one of the most important communicable diseases in the UK. It is associated with serious morbidity, high costs of treatment and care, significant mortality and high number of potential years of life lost.

›› HIV

Further information