Officials have said Wirral could see "numerous" measles outbreaks due to “startling” trends showing vaccination rates are decreasing.
Measles is highly contagious and can cause serious complications including blindness, pneumonia, meningitis, seizures and in some cases, death.
The measles, mumps and rubella (MMR) vaccination has seen a downwards trend in recent years but Wirral has seen a bigger decrease than 75% of councils across England. In some GP practices, uptake was as low as 67% in 2021/22.