Coronavirus: UK to roll out millions of 90-minute 'rapid tests'

With several countries racing to develop a COVID-19 vaccine, the World Health Organization is downplaying expectations. Its head says there may never be a "silver bullet" that eradicates the virus - and that testing and containment efforts are still our best defence. The United Kingdom, meanwhile, has just announced tests that can provide a result within 90 minutes. Al Jazeera's Sonia Gallego reports from London.

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