VANCOUVER, Wash. – Officials say the number of confirmed measles cases in southwestern Washington has increased to 19 with seven more cases suspected.

Clark County health officials said Friday the confirmed cases include 15 children under the age of 10, three people between 10 and 18 and one adult.

Officials say 16 were not immunized against the disease, a highly contagious viral illness spread through the air when an infected person coughs or sneezes.

People who visited nearly 30 locations in southwest Washington and Portland, Oregon may have been exposed.

The patients while contagious have visited schools, medical facilities, restaurants, the Portland International Airport and the Northeast Portland Costco and Ikea stores. One person went to a Portland Trailblazers game on Jan. 11.

Symptoms include fever, cough, runny nose, red eyes and rash.