Don't want to get Giardia? Infect yourself with hookworms instead!
The ultimate in lightweight protection from nasties in the water – leave the filter/chemicals/boiling behind!
"… people infected with worms were less than half as likely to contract G. lamblia as their worm-free counterparts…"
".. those infected with [Giardia] were 70 percent as likely to contract a parasitic worm."
A fight between gut parasites means a win for people
Any volunteers for the first round of tests? :-)
— Rex