In the Herald today, we read news of a surge in mumps cases:

Figures published today reveal that 853 cases of the contagious viral infection were detected between January and the end of March this year – more than the 784 recorded in the whole of 2019.

The writer, typically, accepts the idea that the lower uptake of the MMR vaccine is UK-wide and will explain this surge in Scottish cases. There’s a problem with this.

The MMR immunisation rate in England has fallen for the fourth year in a row to only 87% with in some areas only 67% vaccinated. There have been 230 cases of measles in just the first three months of 2019.

In Scotland the rate is 97% and has been so for 10 years. There have been 10 cases of measles in Scotland, reported so far in 2019. All have been ‘imported’ from England or beyond.

So, if all the measles cases were imported, might the same be true of mumps?