Public Health — Seattle & King County has completed its investigation into a cryptosporidiosis outbreak linked to the pool at McMenamins in Bothell.
Public Health — Seattle & King County has completed its investigation into a cryptosporidiosis outbreak linked to the pool at McMenamins Anderson School in Bothell.
Fourteen people reported becoming ill after swimming at the pool on Aug. 29 or Aug. 30, according to public health officials.
Their symptoms began between Sept. 3 and Sept. 5 and included nausea, diarrhea, abdominal cramps, and fever, according to the report.
No hospitalizations or deaths were reported, Public Health — Seattle & King County said.
Five people who became ill were tested, and four were diagnosed with cryptosporidiosis, an illness caused by the parasite Cryptosporidium, according to Public Health — Seattle & King County.
The parasite can cause watery diarrhea and other gastrointestinal symptoms.
Health officials said they suspect someone infected with the parasite used the pool and spread germs to others.
The parasite is highly resistant to chlorine and can survive for several days in even a well-maintained pool, officials said.
Public Health inspected the facility Sept. 21 and found no violations.
Officials said the pool was well-maintained and followed King County health and safety requirements.
Investigators also reviewed fecal incidents at the facility because contaminated pool water can spread the parasite.
The pool operator did not report any fecal incidents on Aug. 29 or during the 10 days before that date, according to Public Health.
Officials interviewed six people who became sick and reviewed Cryptosporidium education and cleanup procedures with the facility operator.
They also reminded the operator that guests are not allowed to use the pool if they have had vomiting or diarrhea within the previous two weeks.
The outbreak appears to be over, Public Health said.
The "North Shore Lagoon Swimming Pool" is open to the public in one-hour sessions, according to the McMenamins Anderson School website.
There is a pool admission price listed; Bothell residents are free with current proof of address, the website states.
Officials recommend that people stay out of public pools for at least two weeks after diarrhea or vomiting has completely stopped, shower with soap before entering a pool, and avoid swallowing pool water.
