China's Ministry of Culture and Tourism announced group travel could continue to 78 nations including the two popular destinations as well as Australia, Britain, Germany, Qatar and South Korea.
A new analysis suggests that the Omicron variant has comparable intrinsic severity to the ancestral (Wuhan) SARS-CoV-2 strain, but its effective severity is substantially lower because of vaccination.
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Case-patients with at least one dose of Pfizer-BioNTech or CoronaVac vaccine had significantly lower odds of mortality than unvaccinated patients, the authors said, with the lowest odds observed in people who had received three Pfizer doses (odds ratio, 0.31; 95% CI, 0.18 to 0.49).
Five- to 11-year-old children who are vaccinated with two COVID-19 vaccine doses have the highest immunity against omicron infections prior to the first infection.