How do you know if a cat bite is infected?

Red, swollen, pain: Has the cat had it's shots ? Make sure it has. After human bites cats are the most likely to cause infection. They also have their own unique oral bacteria that can cause infection. Hopefully you have thoroughly washed the wound. If it develops redness, swelling and / or pain have it checked promptly. Infections typically develop over two to three days.

Worsening symptoms: Worsening pain, redness, and swelling may be the result of a severe cat bite infection. The sharp needle-like teeth of the cat can penetrate deep into the hand, innoculating internal structures- joints, deep palmar spaces, and tendon sheaths. Immediate medical evaluation should be sought, as antibiotic treatment and surgical intervention may be warranted, if severity and symptoms persist.