A parasite that makes mice unafraid of cats may quash other fears too

Perhaps, the consequences of humans being infected with this parasite are much more severe than was previously thought!

"Some studies have hinted, however, at links between the parasite and human behaviors such as inattention and suicide, as well as mental disorders such as schizophrenia."

A parasite that makes mice unafraid of cats may quash other fears too | Science News: The parasite Toxoplasma gondii can mess with all sorts of mice behaviors and make the rodents fearless in many situations.

"Toxoplasmosis is an infection caused by a single-celled parasite called Toxoplasma gondii. While the parasite is found throughout the world, more than 40 million  people in the United States may be infected with the Toxoplasma parasite. The Toxoplasma parasite can persist for long periods of time in the bodies of humans (and other animals), possibly even for a lifetime. Of those who are infected however, very few have symptoms because a healthy person’s immune system usually keeps the parasite from causing illness." (Source: CDC)

In light of these latest findings the CDC may have to rewrite their Questions & Answers!

Toxoplasmosis Frequently Asked Questions (FAQs) by Centers for Disease Control and Prevention