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