BEIJING/CALIFORNIA - As fears mount that an existing test to identify the coronavirus is failing to catch many of those infected, California-based diagnostics firm Cepheid said on Monday that it is developing an automated molecular test that is expected to deliver results in about 30 minutes.
Authorities are still struggling to ascertain the true extent of the epidemic, which had infected more than 43,000 people and killed over 1,000 worldwide as of Tuesday. "Even patients who definitely have the disease only come back positive 30 per cent to 50 per cent of the time," Prof Wang said."Testing throat swabs [from potentially infected people] also returns a lot of false negatives."
"They may have undergone one or even several NATs and shown no clinical symptoms, but keeping them under observation at home is bound to spread the disease further." But that method has its own problems. Although gene sequencing is comparatively accurate, it is also expensive, and not all affected hospitals have the necessary facilities. Additionally, at the start of the outbreak, many hospitals had to gain permission from higher authorities to conduct such tests, a rule that has since been relaxed.
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