Hong Kong’s leader has ordered government officials not to wear surgical masks except in limited circumstances, to save supplies for medical staff on the front line of the coronavirus outbreak.Chief Executive Carrie Lam Cheng Yuet-ngor, who for the second day in a row was not wearing a mask when she appeared before the press on Tuesday, said her government would slash its use of the facial coverings in response to surging global demand.But medical experts said the approach was not based on any…
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