Lambeth Council is tackling any potential measles outbreak by trying to make sure as many children as possible get the MMR jab.
Measles is very infectious, at best causing several days of misery, but in some cases can lead to serious complications and even death.
Cllr Jim Dickson, Cabinet Member for Health and Wellbeing, said: “If you think your child has not been vaccinated for measles we would strongly encourage you to visit your GP who can check their vaccination history.
“Every child is being offered the chance to be immunised and we urge parents to take up that opportunity to ensure their child’s welfare.”
Public Health England has also written a letter to all GPs advising them to identify and vaccinate all unvaccinated 10- to 16-year-olds.
Dr Ruth Wallis, Lambeth and Southwark Director of Public Health, has written to all local schools recommending that unvaccinated children are referred to their GP.
She said: “We are also raising awareness of the issue by putting up posters warning about measles in GP clinics and community centres. Extra public health funds are expected at national level and will be used to make sure kids get the MMR vaccine.”
The borough has an information line for practice staff and doctors to call for details of the local immunisation programme. All the prevention work being carried out in Lambeth will also take place in the neighbouring borough of Southwark.