[Normal cutaneous flora and secondary bacterial infection].
Normal skin microflora consists of those micro-organisms which are usually present on the skin, without causing infection. The infant's skin colonization starts during birth and after the first months of life the skin microbiota is composed of the same micro-organisms as in the adult. The skin microflora is composed of bacteria, mostly gram-positives Staphylococcus species, yeasts which the most prevalent is Malassezia, viruses and arthropods like Demodex folliculorum. In the last years, the development of molecular microbiology and specially techniques like amplification and comparison of 16S rRNA, have demonstrated that cutaneous microbiota is composed of a higher diversity of bacteria than the traditionally observed in culture methods. We also review the main secondary bacterial skin infections.
Soria
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Servicio de Dermatología, Hospital Universitari Arnau de Vilanova, Universitat de Lleida, Lleida, España. 36911xsg@comb.es
Carrascosa
J M
JM
D000150:Acinetobacter / Q000302:isolation & purification / Q000502:physiology; D000328:Adult; D000818:Animals; D002648:Child; D003872:Dermatitis / Q000150:complications / Q000382:microbiology; D003881:Dermatomycoses / Q000150:complications / Q000382:microbiology; D006094:Gram-Positive Bacteria / Q000302:isolation & purification / Q000502:physiology*; D016908:Gram-Positive Bacterial Infections / Q000453:epidemiology / Q000209:etiology / Q000382:microbiology; D006801:Humans; D007299:Insect Bites and Stings / Q000382:microbiology; D021521:Ribotyping; D012867:Skin / Q000382:microbiology*; D017192:Skin Diseases, Bacterial / Q000453:epidemiology / Q000209:etiology / Q000382:microbiology*; D012883:Skin Ulcer / Q000382:microbiology; D014946:Wound Infection / Q000382:microbiology