A concerning increase in measles cases has been reported in England, with official government data indicating a surge that may be even more severe than initially estimated. As of February 16, there have been 158 confirmed cases this year, with two-thirds of them in London and the remainder in the West Midlands. In 2025, there were 959 laboratory confirmed cases throughout England. An internal memo labeled as “official sensitive” suggests that there have been 340 suspected cases in London in the current year.

Additionally, from January 20 to February 7, a single school in Enfield recorded 34 confirmed cases. Local health officials are urging parents to ensure their children receive the MMR vaccine, as infected children must isolate for three weeks and are not permitted to attend school during that period.

In London, only 70% of children have been vaccinated, significantly lower than the national average of 84%, and well below the 95% threshold required for herd immunity to effectively prevent widespread outbreaks in schools and among vulnerable populations, such as the elderly and pregnant women.

In Enfield, where the school outbreak occurred, the vaccination rate stands at a concerning 64%. According to UKHSA models, in a worst-case scenario, up to 160,000 individuals in London could contract measles. The country remained “measles free” until 2024, when a significant outbreak led to 3,681 officially confirmed cases.

Children are typically offered the MMR vaccine after their first birthday and before starting school, usually around 3 years and 4 months old. The World Health Organization recommends a 95% vaccination rate to protect those who are ineligible for vaccination due to age.

Measles symptoms typically manifest around 10 days post-infection and may include a rash that appears 2 to 4 days later. The rash consists of small red-brown spots that can merge into larger patches and usually starts on the head or neck before spreading to other parts of the body, causing slight itching for some individuals.

If you suspect your child has measles, it is crucial to contact NHS 111 immediately.