This interim guidance is for clinicians caring for patients with confirmed infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the virus that causes coronavirus disease (COVID-19).
This update includes additional information from recent reports including: CDC will update this interim guidance as more information becomes available.
Among reports that describe the clinical presentation of patients with confirmed COVID-19, most are limited to hospitalized patients with pneumonia.
The incubation period is estimated at 4 days (interquartile range: 2 to 7 days). [1] Some studies have estimated a wider range for the incubation period; data for human infection with other coronaviruses (e.g.