Roughly 10 to 15 percent of emergency room visits due to “animal bites” are caused by cats. But these complications can range from irritation and swelling, to serious infection and the need for surgery. The study looked at 193 people who went to the Mayo Clinic for cat bite treatment. 36 people stayed for three days for treatment; another 154 were treated with antibiotics and left the same day (although 21 of them eventually came back for hospitalization).
The issue is that cat bites usually cause injuries to the hand, where a lot of tendons and soft tissue can be easily infected by a specific type of bacteria, Pasteurella multocida, which is present in the mouths of up to 90 percent of “healthy” cats.
Source: New York Times, “Beware of a Cat’s Bite,” Nicholas Bakalar, Feb. 13, 2014