Just in time for summer, the CDC reminds you not to swim with diarrhea:
“During 2000–2014, public health officials from 46 states and Puerto Rico reported 493 outbreaks associated with treated recreational water. These outbreaks resulted in at least 27,219 cases and eight deaths.”
Over half the outbreaks occurred during June, July, and August, and hotel pools were the leading culprit location. The majority of outbreaks (89%) were caused by Cryptosporidium – a parasite that causes diarrhea, thus passing the gift along to all the friends you went swimming with. Other infectious outbreaks were caused by the bacteria Pseudomonas and Legionella. Of these three, Cryptosporidium is the most chlorine resistant and the hardest to kill.
The CDC recommends that you 1) don’t swim with diarrhea or an upset stomach, 2) check the inspection score of the pool you are about to submerse your body into, and 3) don’t swallow the water. I don’t know many people who actively try and swallow pool water, but it’s worth noting that it’s very easy to swallow even small amounts of water accidentally when swimming. Cheers to summer!
Twelve cases of Legionnaires disease have been found in recent Disneyland visitors. The outbreak was traced to two cooling towers contaminated with the bacteria.
Legionnaires is a severe form of pneumonia, caused by exposure to contaminated water, or mist. It is contracting by inhaling the microscopic water droplets that contain the bacteria and develops two to ten days after exposure. Outbreaks have been linked to a variety of water sources: hot tubs, swimming pools, air conditioners, and other water systems in large buildings. It is treatable via antibiotics (while they still work anyway), but can lead to life-threatening complications and may be fatal. People with weakened immune systems are especially at risk.
Meanwhile, Disney has shut down the contaminated cooling towers and treated them with chemicals to destroy the bacteria. A bit of an ominous uptick in Legionnaires has been recorded this year. According to the LA Times:
Orange County has recorded more than 55 cases of the disease this year and has seen the number of cases jump in recent years. A similar upward trend has been seen nationally and elsewhere in Southern California, according to the healthcare agency, though what’s causing that is unclear.