Scarlet Fever (Scarlatina): Causes

Pathogenesis (development of disease)

Scarlatina is transmitted primarily by droplet infection. The causative bacteria are gram-positive ß-streptococci of serogroup A (Streptococcus pyogenes). These form various toxins (poisons), of which the exotoxin (superantigen) causes the typical exanthema (skin rash) in scarlet fever.

Etiology (causes)

Behavioral causes

  • Contact with ill persons