About Cellulitis Cellulitis is a deep infection of the skin; it results in dermal edema and erythema of the skin. The affected area is red, warm, indurated (hard) and tender. The responsible organisms are usually Staphylococcus aureus or Streptococus pyogenes (Group A streptecocci). Prior to the advent of a vaccine, Haemophilus influenzae was the most… Read More