Lengionnaires' Disease Kills 1 In Portland Apartment Building


Photo: KATU

Multnomah County Health officials urge residents to temporarily leave the Rosemont Court apartments after Legionnaire's Disease killed one person and hospitalized four others.

The Health Department notified more than 100 residents at the apartments on North Dekum Street of concerns about the water system after multiple people became ill with pneumonia. The Health Department is working with Northwest Housing Alternatives which owns Rosemont Court to temporarily relocate residents and ensure proper cleaning of the building plumbing system to remove any remaining Legionella bacteria. The bacteria is found naturally in fresh water, but can cause health problems if it gets into a building’s water supply.

Legionnaires’ Disease is not known to spread from person-to-person. And most healthy people exposed to Legionella do not get sick. But for people at increased risk, breathing in very small droplets of water with the bacteria can lead to severe pneumonia.

People at increased risk for infection include the elderly, smokers, those with chronic diseases such as COPD or diabetes, and the immunosuppressed. For those who get symptoms, the first to appear are usually flu-like (fever, tiredness, muscle aches, and headache). Signs of a serious Legionella lung infection (pneumonia) include cough and chest pain. Many people sick with Legionella also have diarrhea.

Legionella outbreaks have been rare in Multnomah County. The Communicable Disease investigations team identified the building’s water supply as the likely source by mid-afternoon on Jan. 4. Within hours, Multnomah County staff were preparing to voluntarily relocate people, and creating a plan with building managers from Income Property Management to treat the water system, including shutting off the water.

On Monday evening, very soon after discovering the issue, employees from the Multnomah County Emergency response team began going door to door inside the building offering temporary housing at local motels, in addition to providing bottled water, handwashing stations, hand sanitizer and portable potties during the transition. Twenty people chose to leave Monday night with others willing to temporarily relocate today. The County also coordinated delivery of meals.

“This is a unique and concerning situation,” said Dr. Jennifer Vines, Multnomah County Health Officer, “and we are working with our partners as quickly as we can to determine if other properties or water sources are affected.”

Source: Multnomah County Health