Box 1.

Criteria to guide evaluation of persons under investigation for COVID-19

Clinical features	AND	Epidemiologic risk
Fevera or signs/symptoms of lower respiratory illness (eg, cough or shortness of breath)	AND	Any person, including health care workers, who has had close contactb with a laboratory-confirmed COVID-19 patient within 14 days of symptom onset
Fevera and signs/symptoms of a lower respiratory illness (eg, cough or shortness of breath)	AND	A history of travel from Hubei Province, China, within 14 days of symptom onset
Fevera and signs/symptoms of a lower respiratory illness (eg, cough or shortness of breath) requiring hospitalization	AND	A history of travel from mainland China within 14 days of symptom onset

The criteria are intended to serve as guidance for evaluation. Patients should be evaluated and discussed with public health departments on a case-by-case basis if their clinical presentation or exposure history is equivocal (eg, uncertain travel or exposure) (see https://www.cdc.gov/coronavirus/2019-nCoV/hcp/clinical-criteria.html for updates).

COVID-19, coronavirus disease 2019.

Rasmussen. 2019 novel coronavirus and pregnancy. Am J Obstet Gynecol 2020.

^aFever may be subjective or confirmed

^bClose contact is defined as follows: (1) being within ∼6 feet (2 m) of a COVID-19 case for a prolonged period of time while not wearing recommended personal protective equipment (eg, gowns, gloves, NIOSH-certified disposable N95 respirator, eye protection); close contact can occur while caring for, living with, visiting, or sharing a health care waiting area or room with a COVID-19 case; OR (2) having direct contact with infectious secretions of a COVID-19 case (eg, being coughed on) while not wearing recommended personal protective equipment.