A fast-spreading measles outbreak has hit several schools in North London, with tens of children infected. Health officials have warned that the highly contagious disease can cause serious health complications, and families have been urged to ensure their children are up to date with their immunizations. The outbreak has sparked concern, with one in five infected children requiring hospitalization, all of whom were not fully immunized. The UK Health Security Agency (UKHSA) reported 34 laboratory-confirmed measles cases in Enfield in January, representing over a third of the total cases confirmed across England in the first month of the year. The outbreak has led to a controversial interpretation of the vaccine's effectiveness, with some questioning the recommended vaccination rate of 95%. The UKHSA figures for 2024-25 showed that only 84.4% of children across the UK had received two MMR doses by their fifth birthday, raising concerns about the potential loss of measles elimination status. What is measles and what are the symptoms? Measles is a highly contagious disease spread by coughs and sneezes or by touching contaminated surfaces. Common symptoms include a high fever, sore, red, and watery eyes, coughing, sneezing, and small white spots inside the mouth. A blotchy red or brown rash typically appears after a few days, starting behind the ears and on the face before spreading. The rash may be harder to detect on brown and black skin. The outbreak has highlighted the importance of vaccination in protecting both individuals and communities, and the need for continued efforts to ensure high vaccination rates to prevent the spread of this preventable disease.