Having performed some medical work in Mexico in the 1970's, (I'm that ancient), it has always occurred to me that chronic parasitosis was a problem that quietly devastated the potential of so many Mexican children. Harboring intestinal worms for the long term remains a public health problem throughout the Americas. It results from the consumption of drinking water that mixes with sewage.
People with these creepy crawlers on board can be fatigued for the long term, suffer abdominal...

