Why are measles cases rising in London?

How the outbreak started and what public health officials are doing

A fast‑moving measles outbreak centred in north‑east London has infected dozens of children, with reports of people needing hospital care. Health officials point to falling MMR vaccination coverage and pockets of under‑vaccination as the principal drivers of transmission. Where vaccine take‑up drops, the virus—one of the most contagious known—finds susceptible groups and spreads rapidly through schools, nurseries and community settings.

Public‑health response has included targeted vaccination campaigns, school exclusion policies for close contacts, and calls to make jabs easier to access. Experts have urged reforms to delivery to reach families who have missed routine immunisations; proposals include expanding provision beyond traditional clinics, for example by offering jabs in pharmacies and community settings to remove practical barriers.

Actions being taken

• Contact tracing and outreach to families in affected schools and nurseries.
• Urgent vaccination offers for unvaccinated or under‑vaccinated children.
• Temporary exclusion of close contacts from school or other group settings to limit spread.

Why it matters

Measles can cause serious complications, including pneumonia, brain inflammation and, rarely, death. Outbreaks place extra pressure on hospitals, especially paediatric services, and can undermine public confidence in routine immunisation programmes. Addressing this requires both immediate efforts to raise vaccination in the outbreak area and longer‑term strategies to reverse falling coverage: easier access to MMR, clearer public information, and work to overcome hesitancy among communities where uptake remains low.