@article{mbs:/content/journal/ijsem/10.1099/00207713-15-2-117, author = "Torres Pereira, A.", title = "Two different varieties of Staphylococcus aureus based on the correlation between antigenic structure, phage pattern, antibiotic pattern and virulence", journal= "International Journal of Systematic and Evolutionary Microbiology", year = "1965", volume = "15", number = "2", pages = "117-121", doi = "https://doi.org/10.1099/00207713-15-2-117", url = "https://www.microbiologyresearch.org/content/journal/ijsem/10.1099/00207713-15-2-117", publisher = "Microbiology Society", issn = "1466-5034", type = "Journal Article", abstract = "SUMMARY The majority of recent isolates of Staphylococcus aureus can be separated into two varieties and these may correspond to the original antigenic forms of Cowan’s serotypes I and III. The most common variety has antigen 17 or I as a surface antigen and is lysed by serological group B phages; it may contain serological group A prophages and is usually tetracycline sensitive. It is probably more virulent (particularly in the 17+ form) than the second variety which possesses antigen 13 or 3, and is lysed by serological group A phages and may contain B prophages. It is usually tetracycline resistant.", }