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Lassa virus causes Lassa fever, an acute viral haemorrhagic fever (VHF).

• Updated: 30 January 2025

The indication for the treatment of post-operative pain has been removed from the licences of all prolonged release opioids due to the increased risk of persistent post-operative opioid use (PPOU) and opioid-induced ventilatory impairment (OIVI).

• Updated: 12 March 2025

Crimean-Congo haemorrhagic fever (CCHF) is a viral haemorrhagic fever (VHF) caused by a virus of the Nairoviridae family.

• Updated: 15 August 2024

Safety leaflet on opioid medicines to help patients and their families reduce the risks of harm.

• Updated: 3 August 2021

The characteristics, symptoms, diagnosis and epidemiology of chikungunya.

• Updated: 25 April 2014

Find out about the symptoms of COVID-19, what to do if you or your child has them and when to get medical help.

• Updated: 18 September 2020

Advice and guidance on the health needs of migrant patients for healthcare practitioners.

• Updated: 7 June 2022

Find out about the long-term effects some people can have after having COVID-19.

• Updated: 24 September 2021

Guidance for people with symptoms of a respiratory infection including COVID-19, or a positive test result for COVID-19.

• Updated: 10 June 2022

Advice and guidance on the health needs of migrant patients for healthcare practitioners.

• Updated: 31 March 2025