While doctors have focused on respiratory samples from pneumonia cases to identify coronavirus patients, they might have ignored a less apparent source of the spread: diarrhea.
The novel coronavirus was detected in the loose stool of the first U.S. case — a finding that hasn't featured among case reports from Wuhan, China, the epicenter of the outbreak. However, that doesn't surprise scientists who have studied coronaviruses, nor doctors familiar with the bug that caused SARS.
Diarrhea occurred in about 10 to 20 percent of patients afflicted with severe acute respiratory syndrome about 17 years ago and was the source of an explosive SARS outbreak in the Amoy Gardens residential complex in Hong Kong.