Turkey has been contact tracing for a century. That offers lessons and perils.

Five months after a modest surge of COVID-19, the nation’s outbreak falls well outside the worst in the world. But its authoritarian tendencies have sometimes overshadowed its reputation for public health.

Dr Gökçe Ünal, a dentist who has been reassigned as a contact tracer, is talking to a COVID-19 patient and giving her medicine in Kadıköy, Istanbul.

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