Infected cat scratch?

I have a blister on the side of my palm it has like 3 spots in it that are full of puss and it is very sore now I had it for awhile I think my cat like dug his nail into the side of my palm he didn't really scratch my palm more like he dug his nail in one little spot.. well I had to go to the emergency room because I've been having really bad fevers I got a cat scan and the doctor said it was a kidney infection.. I showed him the blister and he said it was a splinter.. Is this anything to worry about? Does anyone know how to treat something like this?

Ok I went to the ER and they did a culture on it and gave me an antibiotic zithromax they said they won't know for sure if it is the bacteria the cats have but they will know like in 2 days but they said zithromax will kill the cat infection is that good do I need a shot or anything else?

Cat bites/scratches get infected about 80% of the time, even after washing it. If it involves the hand, it is especially concerning. The infection may cause the lymph glands in the armpit to swell up and hurt, that is another bad sign in addition to the pus you see under the skin. The most common bacteria is called Pasteurella Multiocida. It needs treatment with an antibiotic called Augmentin. Another alternative drug is called Cefuroximine axetil
I would suggest you see someone who could recognise this injury, its potential to cause infection, and render the proper treatment. Untreated, complicated infections involving the hand often needs surgery!

DOCTOR, QUICK! ... I'm not one for doctors, in almost all cases. but in this case, you need a shot and fast.

You need a second opinion, -the first was wrong.