Rubella (German Measles).
A, Progression of rash. B, Appearance of rash.
Rubella (German Measles)
Agent: Rubella virus
Transmission: Direct contact and spread via infected person; indirectly via articles freshly contaminated with nasopharyngeal secretions, feces, or urine
Incubation period: 14-21 days
Period of communicability: 7 days before to approximately 5 days after appearance of rash
Scarlet Fever
Agent: Group A β-haemolytic streptococcal
Source: Usually from nasopharyngeal secretions of infected person and carriers
Transmission: Direct contact with infected person or droplet spread indirectly by contact with contaminated articles, ingestion of contaminated milk or other food
Incubation period: 2-4 days, with range of 1-7 days
Period of communicability: During incubation period and clinical illness approximately 10 days; during first 2 weeks of carrier phase although may persist for months
Scarlet fever.
