Section 690.750  Pertussis (Whooping Cough) (Reportable by telephone as soon as possible, within 24 hours)

a)         Control of Case

1)         Cases shall be excluded from school, child care facilities, or the workplace until five days of appropriate antibiotic therapy has been completed.

2)         Cases who do not receive appropriate antibiotic therapy shall be isolated for 21 days after onset of paroxysmal cough.

b)         Control of Contacts

1)         All household contacts and community-based contacts determined by the local health authority to be at risk should receive at least five days of a course of appropriate antibiotics.

2)         Close contacts who are incompletely immunized should continue or initiate the primary series.

3)         Symptomatic contacts shall be excluded from school, child care facility, or workplace until five days of appropriate antibiotic therapy has been completed.

c)         Laboratory Reporting

Laboratories shall report to the local health authority patients who have positive results on any laboratory test indicative of and specific for detecting pertussis infection, including all isolates of Bordetella pertussis, and positive polymerase chain reaction tests for Bordetella pertussis.  Serology and direct fluorescent antibody tests are not generally effective in diagnosing new cases. 

(Source:  Amended at 48 Ill. Reg. 4098, effective February 27, 2024)