Control of a Case. A health officer or health care provider shall recommend that a case may not attend school, a workplace, or a child care facility until the patient has received at least 5 days of appropriate antibiotics. If a case does not receive antibiotics, a health officer shall restrict or exclude the case from attending a school, health care facility, child care facility, or workplace for 3 weeks after onset of cough. Control of Contacts. A health officer may: Require all inadequately immunized household contacts younger than 7 years old to be excluded from schools, child care facilities, and public gatherings: For 21 days after last exposure; or Until the case patients and contacts have received 5 days of appropriate antibiotics; Require all contacts to verify immunization status and be brought up to date if not adequately immunized to protect against subsequent exposure; and Require antibiotic prophylaxis for contacts of cases. Infection Control. A health care provider shall practice droplet precautions for the shorter of: 21 days after onset of cough; or When a case has been on appropriate antibiotics for 5 days.