Toxoplasmosis is the problem.
That's right...but the Toxoplasmosis Bacteria can be also found in raw meat (pork)...so they recommend to serve meat only well-done...
Toxoplasmosis is like having the flu...you don't feel well have fever etc. it's in now way a harm for adults or children...it can be only a harm for UNBORN children, but however it's NO REASON to give away a cat!!!

Sadly still many doctors recommend this however!!!
Most people already carry this bacteria, which doesn't matter if you already have it when pregnant...it can only effect the unborn child if you get it WHILE pregnant...
If you already carry the bacteria you don't have to worry to get it again, you then are immun to get it again...
It's a little complicated, I suppose?!

You can also be tested if you carry this bacteria to rule out any worries!!!

BUT AGAIN IT'S NO REASON TO GIVE AWAY A CAT!!!