Reference: pg 46 New Zealand Guidelines for Rheumatic Fever; 2014 Update
How should symptomatic household contacts of GAS-culture positive pharyngitis patients be managed?
The likelihood of symptomatic householders, particularly school aged children, having GAS cultured positive pharyngitis is high. Within a household, the risk of secondary GAS infection was 1.8 times greater than that of a primary infection in the community. In households, more than half of secondary cases of serologically proven GAS pharyngitis were in five to 12 year old children. Danchin defined symptomatic as sore throat plus one of the Centor criteria: a history of fever, tender anterior cervical lymph nodes, pharyngeal exudate, or an absence of cough. Because these criteria were not developed for children, parents were encouraged to bring in their children with a broader set of symptoms, including headache, abdominal pain, vomiting, cough, coryza and hoarseness. Falck et al followed 110 index GAS pharyngitis patients for a month and found at days six to ten, 20 out of 263 (8%) household contacts were symptomatic and cultured GAS, and 70 out of 263 (27%) were colonised (cultured GAS from their throats but were not symptomatic).
Disclaimer: This site is intended to be flexible and frequently updated. While every effort has been made to ensure accuracy, all information should be verified.