Cats actually carry a few parasites, a few fleas and some diseases and some can turn serious however, not many. If felines were creating too much sickness they might not need invaded our lives as well as they have. But you may still find people out there who do nothing like cats. When I first visited China about 20 years ago there have been very few pet cats living with people and very few wild felines. I was astonished because I've experienced cats all my entire life and I never thought people didn't like cats. But then in China the people said cats carried disease and this was it. I think that may have something regarding that cat suffering you get in your eyeball. Not serious just a little problem for a week If you were pregnant you'd to keep away from cats. I believe they were discussing toxoplasmosis, but if you get that whenever you are a kid it will not affect your baby. They also said pet cats were filthy but I don't think so. I believe pet cats are one of the cleanest house animals you can have. I feel that originated from the cats getting rid of the rats and mice. Because rats are very dirty family pets then because the felines killed and ate them they'll also be filthy. A soiled by connection kind of thing. Also there have been some big sewer rats jogging round during the day. Once I noticed a rat and a pet cat face off the other person and the kitten wasn't much bigger than the rat. They were about a feet apart staring one another out and the cat ran away. I'm not astonished the rat's teeth were bigger that the felines.
If this frame of mind towards cats goes back generations then one can understand why historians say the Black colored Death were only available in China. Where there are rats and no cats then your rats dominate and that could have been a precursor for the condition to get near people. Now after i go back to China you may still find rats playing around but not so many in the housing estates. There are many down by the river. Also they have a very efficient rubbish clean up system that continues the towns very clean. Where I stay the rubbish is gathered everyday. That could also keep the rat populace down. And with so many discarded pet cats running around the rats don't have much of an opportunity. I've never seen this but I think the government accumulates a lot of cats. There used to be colonies of stray pet cats surviving in some places however now I don't see them any longer.