SINGAPORE (Reuters) – Asian and European countries rushed to tighten restrictions on Friday after a new and possibly vaccine-resistant coronavirus variant was detected in South Africa, with Singapore and India announcing stricter border controls and more rigorous testing. The variant has a spike protein that is dramatically different to the one in the original coronavirus that COVID-19 vaccines are based on, the UK Health Security Agency said. Scientists are still learning about the variant, first identified at the start of this week, but the news pummelled financial markets, with stocks in As…

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