File photo dated 25/04/13 of a teenager having a measles vaccination, as health officials are warning the public to check they are fully immunised against measles after an increase in diagnoses.

Vaccination against the potentially fatal disease is at a 10-year low, health officials warned.

Doctors urged to be on the look out after outbreak of London measles cases

Those aged 19 to 25 are particularly at risk, the UK Health Security Agency warns.

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Doctors urged to be on the look out after outbreak of London measles cases

London at risk of major measles outbreak due to low vaccination rate