Myxozoa are very small jellyfish-like organisms that infect fish, worms, and amphibians in both freshwater and saltwater environments. They are parasites, which means that they live inside their hosts and use their resources. They usually cause mild diseases in the organisms they infect. The parasite has not been proven to cause disease in humans and probably passes through them into the feces undetected. However, in rare cases, people with diarrhea have had the parasites' spores in their feces. It is not known for certain if the myxozoa caused the diarrhea because other disease-causing parasites were also present.
Eating infected fish may put someone at risk for getting myxozoa. In humans, the infection is diagnosed when a doctor finds the parasites’ spores in human stool. If you or a family member has been diagnosed with myxozoa, talk with your doctor about the most current treatment options.
Description Last Updated: Jan 15, 2018