Yes! Or that too... actually, its been all over the news this summer about popular swimming spots being infected with giardia... I don't want them to go on the protazoa hunt though and claim I'm fine because they didn't find giardia. I DO have stray cats because my a**ho** neighbor feeds them and then they come and pee all over my wood pile. That's the only explanation I can come up with as to where I'd get a roundworm infection... i don't really go anywhere to get infected. I work, home school my kids, sleep and again. But my partner cuts the same wood that I sand and paint.. he should have this too. Unless he's right about his body being too undesireable for a parasite...