Giardia causes hundreds of millions of infections globally each year.
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US sewage treatment plants likely don’t get rid of all the disease-causing protozoa, and monitoring discharged wastewater for it is difficult.
Headlines about brain worms can be alarming. There are much more common parasites which can infect your body and brain and ways you can minimise your risks of being infected with one.
Normally land-bound pathogens that cause deadly diseases for both humans and animals can cling to microplastics and end up in your seafood.
There are three classes of parasites that can cause disease in humans. Here’s what you need to know.




