KUALA LUMPUR, Feb 9 — Sales executive Muhamaad Faizal Awang Kechil's voice cracks with emotion as he shares his experience after being diagnosed with Covid-19 for the second time.

AMSTERDAM/BRUSSELS, Aug 25 — Two European patients are confirmed to have been reinfected with the coronavirus, according to regional public broadcasters, raising concerns about people's immunity to the virus as the world struggles to tame the pandemic.