Last week’s announcement by President Cyril Ramaphosa to deploy a 10,000-strong force of fieldworkers to visit homes across the country to screen people for symptoms of Covid-19, a respiratory disease caused by the SARS-CoV-2 coronavirus, is welcome news.

The field workers will send those with signs of the illness for testing at local hospitals and mobile testing labs. People found to be positive with mild symptoms will be quarantined either at home or in government facilities, and those who are seriously ill will be hospitalised...

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