[Rat-bite--an infant bitten by a rat].

Three days after a rat-bite a two-month-old girl developed clinical symptoms of Streptobacillus moniliformis infection, called rat-bite fever. She became seriously ill, but responded well to treatment with benzylpencillin. In the light of our case and previous publications, we recommend prophylactic penicillin to be given to infants after rat-bites.