Omicron spreads, cases detected in Netherlands, Denmark, Australia

Omicron kept spreading around the world on Sunday, with 13 cases found in the Netherlands and two each in Denmark and Australia even as more countries imposed travel restriction. Dutch health authorities said the 13 cases of the variant were found among people on two flights from South Africa to Amsterdam on Friday. Authorities had tested all of over 600 passengers on the two flights and had found 61 Covid cases.