Months after the coronavirus infected more than 700 people on board the Diamond Princess cruise ship in Japan, scientists are still gleaning insights into the patterns of illness it causes.
Almost a fifth of the 3,711 passengers and crew on the 13-deck luxury ship in February caught the virus — most of them showing no tell-tale symptoms of Covid-19 at the time. A detailed analysis of cases found the disease could be very mild, causing a sore throat, dry cough and runny nose, without fever or lower respiratory tract symptoms, a study published in the June edition of the journal Emerging Infectious Diseases showed.
That’s problematic and differs with early reports that described Covid-19 manifesting as pneumonia, according to researchers in Japan. “Most cases are milder and could have more transmission potential because patients might not seek medical attention,” said Takeshi Arashiro, a junior resident at the Asahi General Hospital in Chiba, just outside Tokyo.
Early reports described Covid-19 manifesting as pneumonia, “but most cases are milder and could have more transmission potential because patients might not seek medical attention,” said Arashiro, who is also a collaborating researcher with the Infectious Diseases Surveillance Center in the National Institute of Infectious Diseases in Tokyo.
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