[Acute infectious cellulitis. Apropos of 28 cases].

Acute infectious cellulitis is a common condition in pediatric patients. We retrospectively studied 28 cases seen over the last four years. Average age of patients was four years. Fever and a decline in general health were often found. Streptococcus pyogenes and Staphylococcus aureus were the most common organisms in our series. Outcome was favorable under early antimicrobial therapy selected according to age and clinical features. Before three months of age, cellulitis suggests a streptococcus B infection and should be treated by ampicillin or parenteral penicillin, combined with an aminoglycoside if called for. Between 4 months and 2 years of age, Haemophilus influenzae b or a pneumococcus are the most likely organisms; Haemophilus cellulitis should be treated by a third generation cephalosporin for ten days or longer, followed by ampicillin or ampicillin-clavulanic acid per os for ten or 15 days. Beyond 2-3 years of age, all organisms may be the cause of cellulitis, but the most likely are Streptococcus pyogenes and Staphylococcus aureus, treatment consists in administration of either a penicillin M or a macrolide, the route being selected according to the general condition and site of the cellulitis.