In large developed countries, between one and three children out of every 1000 with measles will die, Dr Montgomery said. The mortality rate is higher in children who also have other illnesses, poor immune systems, or are malnourished.
"Measles can be prevented by immunisation, with routine measles immunisation usually given at 15 months and at 4 years of age.
"If anyone is exposed to measles, they should discuss their situation with a health professional as soon as possible. They may require immediate measles vaccination, or they may need hospital treatment with immunoglobin in certain circumstances."
Children under 15-months-old, pregnant women who have not been immunised, and people with low immunity are particularly vulnerable to the disease.
Dr Montgomery strongly advised parents to make sure all immunisations are given on time, and to seek medical advice immediately if their child is exposed to measles and has not had two doses of MMR vaccine.