Measles Is Rising Again: What Is Happening in London and Around the World
- Paul Francis

- 1 day ago
- 3 min read
Measles, once considered largely under control in the UK, is now making headlines again. London has seen a growing outbreak, particularly affecting children, and public health officials are responding with renewed urgency. At the same time, falling vaccination rates across the world are contributing to a wider resurgence of this highly contagious disease.

The Measles Outbreak in London
London has recently recorded a rise in confirmed measles cases, with clusters identified in several boroughs. Schools and nurseries have been particularly affected, as measles spreads very easily in close contact environments.
Measles is transmitted through coughs, sneezes and airborne droplets. It can linger in the air for up to two hours after an infected person leaves a room. Because of this, even a single case can quickly turn into dozens in communities where vaccination coverage is low.
Most of the recent London cases have involved children who were either unvaccinated or had not received both doses of the MMR vaccine. Symptoms typically begin with a high fever, cough, runny nose and red eyes, followed by a distinctive rash. While many people recover, measles can lead to serious complications, including pneumonia, brain inflammation, and in rare cases, death.
In response to the outbreak, health authorities have:
Launched targeted vaccination campaigns in affected boroughs
Set up pop-up and catch-up vaccination clinics
Issued guidance to schools and parents
Advised unvaccinated contacts to stay home for up to 21 days if exposed
Officials are urging parents to check their children’s immunisation records and ensure both doses of the MMR vaccine have been received. The goal is to raise coverage quickly enough to prevent further spread.
The Bigger Picture: Falling Vaccination Rates
The London outbreak is not happening in isolation. It reflects a wider issue that has been building for several years.
Globally, routine vaccination rates dropped during the COVID pandemic. Appointments were missed, health systems were disrupted, and many catch-up programmes have not fully closed the gap. As a result, millions of children worldwide are now under-vaccinated.
Measles is especially sensitive to even small declines in vaccine uptake. Around 95 per cent coverage with two doses is needed to maintain herd immunity. When coverage falls below that level, outbreaks become far more likely.
In addition to pandemic disruption, other factors have contributed to falling vaccination rates:
Vaccine hesitancy is influenced by misinformation
Reduced access to healthcare services in some communities
Inequalities in healthcare delivery
Delayed or missed routine childhood appointments
When vaccination gaps develop, measles is often the first disease to reappear because of how contagious it is.
Rising Cases in Other Countries
The increase in measles cases is being reported across multiple regions, not just the UK.
Several European countries have seen sharp rises in cases. Parts of North America have also experienced significant outbreaks, particularly in areas with lower vaccination coverage. In some regions, countries that had previously achieved measles elimination status have lost it due to sustained transmission.
Health agencies worldwide are warning that unless vaccination coverage improves, measles outbreaks are likely to continue and potentially worsen.
Why This Matters
Measles is preventable. The MMR vaccine is safe, effective and widely available in the UK. Two doses provide strong protection, not only for the individual but also for the wider community.
Outbreaks like the one in London serve as a reminder that progress against infectious diseases depends on consistent vaccination coverage. When uptake falls, even temporarily, diseases that were once controlled can return.
Public health officials are clear that increasing vaccination rates is the most effective way to stop the current outbreak and prevent future ones.
Measles spreads quickly, but protection is simple.
stay safe, and GET VACCINATED.





