3 minutes
The tale of a Thai taxi driver who contracted coronavirus hasn't changed
the way health officials think about its transmission -- yet.
However, a case report published this week in the New England Journal of
Medicine has caused some concern. The report describes how a Bangkok
cabbie may have caught the novel virus, called COVID-19, from Chinese
tourists who had been his passengers.
The tourists, who were coughing throughout the ride, were wearing face
masks, according to the authors of the report, infectious disease
specialists at the Bamrasnaradura Institute in Nonthaburi, Thailand, and
Chulalongkorn University in Bangkok.
Moreover, the driver himself said that he had no history of travel to China.
U.S. Centers for Disease Control and Prevention officials did not
address the Thailand case report specifically during a press briefing
Friday. Nancy Messonnier, director of the agency's National Center for
Immunization and Respiratory Diseases, said, however, that "respiratory
droplets" passed when an infected person coughs or sneezes remain "the
main driver of spread" for COVID-19, the virus currently ravaging Hubei
province in China.
"Close contacts" -- those within six feet or less of an infected person
-- are at increased risk for person-to-person transmission, she added.
Whether an infected person must be displaying symptoms of the virus to pass it to someone else is still unclear.
In addition, Messonnier also noted that "some spread may happen" as a
result of touching contaminated surfaces -- like a car door handle, for
example. To date, though, evidence suggests that COVID-19 doesn't
survive for long on surfaces, making risk of contracting the virus this
way minimal.
According to the case report on the taxi driver, the 51-year-old man
first started experiencing symptoms on January 20. Initially, he went to
the doctor and was tested for the flu, and was negative.
After he was unable to work for three days due to illness, he decided to
visit a local hospital. There, he was classified as under investigation
for COVID-19, isolated and referred to Bamrasnaradura, the Thai agency
responsible for the management of emerging infectious diseases.
CT scans performed by physicians at Bamrasnaradura confirmed
lower-respiratory infection, and subsequent samples from the taxi
driver's nose and throat tested positive for COVID-19.
He was declared virus-free on February 5 and discharged from the
hospital, and his wife and son remained asymptomatic and tested negative
for COVID-19, according to the report.
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