First check-up at the veterinary
As a general rule, every time we adopt an animal, we should take it to the veterinary clinic; specially if it is an alley or stray cat. In this case, we don't know its state or whether or not it can infect other animals we have at home or even ourselves.
In the picture above, we see a kitty which is probably sick an d might infect other cats. This is also an opportunity for a cat to get used to the veterinary.
These early visits allow our cat to be curious around the clinic and make it a normal routine.
We need to be aware that in the waiting room our cats might be afraid being surrounded by dogs and ambient noises. We need to find an isolated area away from dogs.