Four new cases of measles have been diagnosed in the north Dublin region as the virus spread due to low vaccination levels in the capital.

The number of cases has risen to 17, up from 13 last week. The HSE said there were now eight adults and nine children affected, all on the north side of Dublin.

All the cases except two involved people who were not vaccinated with two doses of the MMR vaccine. Uptake of the first dose is lower in parts of Dublin than the rest of the country, dipping to 88 per cent compared with the national average of 92 per cent.

The first sufferers were detected last month when people returned home after contracting the virus abroad. Public health experts…