Hong Kong's government says 500,000 people have already signed up for its free universal coronavirus testing program, which is due to launch on Tuesday.
But a pro-democracy union of healthcare workers has called for a boycott because the plan is being funded by the Chinese government.
A team of medical staff from China will lead the screening, and three mainland-based laboratories will process the results, leading many to fear that genetic data collected could be used for other purposes.

Al Jazeera’s Sarah Clarke reports from Hong Kong.

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