The official number of coronavirus cases in Wuhan might not reflect the true scale of the crisis as there may be many patients who are undiagnosed and not reported, medical experts said.

Wuhan – the city of 11 million people where

the deadly virus outbreak began in December – has so far reported more than 5,000 confirmed cases of the pneumonia-like illness, or about one-third of the total number across mainland China.

But some medical experts have expressed concern that the real number could be much higher because cases are only classified as confirmed once a patient has twice tested positive for the new strain of coronavirus. Given that there is also a shortage of coronavirus testing kits, the figure could be much higher than it actually is.

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