Measles case identified in a King County infant

April 10, 2026.Reading time 6 minutes.

Public Health – Seattle & King County is informing the community of a confirmed measles case in a King County infant who may have exposed others to the measles virus.

Legionella: How this lesser-known bacteria in water systems can impact your health

April 2, 2026.Reading time 9 minutes.

Stainless steel showerhead spraying water downward. Blue tile in the background.

In 2025, there were 33 cases of Legionella infections among King County residents compared to 8 cases in 2005. But there is good news: Legionnaires’ disease is preventable!

Two measles cases identified in King County connected to international travel

April 1, 2026.Reading time 6 minutes.

Public Health – Seattle & King County was notified on March 30, 2026, of measles cases in two adults who live in King County. The two individuals traveled together internationally where they were likely exposed to measles. Before they were diagnosed with measles, the two individuals visited multiple locations in Seattle, Kirkland and Bellevue while infectious.

Measles case in traveler with possible exposures at Seattle-Tacoma International Airport

March 20, 2026.Reading time 6 minutes.

Leer en español Public Health – Seattle & King County was notified of a confirmed measles case in a Canadian resident who traveled through Seattle-Tacoma International Airport (SEA)) on March 9, 2026. The individual’s vaccination status is unknown. If you are not immune to measles or don’t know your vaccination status, and were at the airport on March 9, please visit our measles webpage for specific information about potential areas […]

Measles case in traveler with possible exposures at Seattle-Tacoma International Airport

January 30, 2026.Reading time 6 minutes.

Public Health – Seattle & King County is informing the community of a measles case in a Canadian resident who traveled through Seattle-Tacoma International Airport (SEA) on January 22, 2026. Those who are unsure of their measles vaccination status and were at the airport on January 22 should check the kingcounty.gov/measles website for more information.

Invisible Victories: How Vaccines Transformed Childhood

January 8, 2026.Reading time 9 minutes.

Children laughing and playing outside wearing warm clothes.

Since vaccine victories are largely invisible, we don’t always give them the credit the deserve. Here’s how three childhood vaccines have radically changed our lives.