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I'm not worried really. I'm fascinated that it can on reproduce in feline animals. Did I read that correctly? Because my mind is blown.

Yep you read that correctly. It can live in a variety of mammals (us included) but its reproduction is restricted to felines.

https://msu.edu/course/zol/316/tgon2.htm

Makes me feel like I should clean the litter box more often.

Well thats probably not a bad idea, regardless of the T. gondii.

And let the cats go outside more often...It helps preventing they fill up the litterbox..apperantly not all the neighbours would be happy ;)

Letting them go outside however allows them to come in contact with other animals which carry the parasite.

Thanks for reading :)