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A health worker takes a nasal swab sample from a boy for COVID-19 test in Colombo, Sri Lanka, May 24, 2021. Sri Lankan authorities on Monday said the islandwide travel restrictions imposed on May 21 will be extended till June 7 in order to prevent a further spread of the COVID-19 virus. The travel restriction was earlier scheduled to be lifted on May 28. (Photo by Ajith Perera/Xinhua)
