The Covid-19 Omicron variant was present in the Netherlands a week before two flights arrived from South Africa carrying the virus, Dutch health officials said Tuesday, throwing the timeline of the variant's spread in Europe into question.
원문출처 : https://www.cnn.com/2021/11/30/europe/omicron-netherlands-local-transmission-intl/index.html
원문출처 : https://www.cnn.com/2021/11/30/europe/omicron-netherlands-local-transmission-intl/index.html