I read about this a while back. A large portion of the world population has a parasite contracted from domestic cats. The article says it may be as high as 45% in France. “May”, “possibly”, “could” are great words for getting people who read quickly and indiscriminately to state it absolutely at social gatherings. “Forty five percent of the French have a creepy brain parasite”. Obviously they don’t know one way or the other but stating the uncertainty will not get you to read the article. In the end, this is just bad science reporting. Most of the false things I learned about science were the result of newspapers. As I stated once before, once you become an expert in a field, any field you quickly discover how bad the reporting really is.