Pupils at Devizes School in Wiltshire have been vaccinated this morning after a measles outbreak.
Two cases were confirmed and a number of others are suspected at the school.
Immunisation against measles, mumps and rubella is also open to pupils' families from 3pm on Wednesday.
There will be a further session on Friday.
More top news
Could this 10-year-old be Bristol City FC's lucky charm? The club are hoping Jaden Neale will bring their team a win against Manchester City
The Force is pledging to make local policing accessible again by providing a dedicated, named PCSO in every neighbourhood.
Read our Political Correspondent David Wood's blog about the growing number of Conservative MPs publicly calling for more NHS investment.