The World Health Organization (WHO) voiced concerns that the use of medical masks by the general public could worsen shortcomings for health workers at the front line of Covid-19 pandemic.
Locking in many places proved to be effective in reducing the spread of viruses, but every removal of restrictions requires a calibrated approach, step-wise based on data, he said.
"Masks alone cannot stop pandemic, countries must continue to find, isolate and treat each case and track each contact," Director General Pedro Adam told a press conference.
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