A recent outbreak has led to a fourth death related to measles. This is the highest number of measles-related deaths in the US in decades. The last time four measles deaths were recorded in a single year was 1992.

The most recent death occurred in a person who was not vaccinated. Two previous deaths were reported in infants who had measles. Another death was reported over the weekend, that of a 40-year-old woman.

Further details about the outbreak and the deaths are available from the source. The number of measles-related deaths in the US had been low in recent years, with three deaths reported last year, in Texas and New Mexico.