Scarlet Fever Strep throat caused by erythrogenic toxin producing strains of Streptococcus pyogenes results in scarlet fever. Erythrogenic toxin production is caused by a phage. Symptoms include a red rash, high fever, red enlarged tongue. Penicillin is the drug of choice. Immunity is developed to the toxin not the organism.
Streptococcal Pharyngitis and Scarlet Fever – Causes, Symptoms, Diagnosis, Treatment and Ongoing care - A childhood disease characterized by fever, pharyngitis, and rash caused by group A β-hemolytic Streptococcus pyogenes (GAS) that produces erythrogenic toxin Read more: http://health.tipsdiscover.com/streptococcal-pharyngitis-scarlet-fever-causes-symptoms-diagnosis-treatment-ongoing-care/#ixzz2ls8YyBI5