A lab technician from the civil protection ambulance service wearing personal protective equipment (PPE) conducts Covid-19 testing for unvaccinated passengers or those arriving from a designated 'Red Zone' country, at Paris-Charles de Gaulle airport in Paris, France, on Tuesday, Dec. 14, 2021. Photographer: Nathan Laine/Bloomberg 新型コロナウイルスのオミクロン変異株はデルタ株や変異前ウイルスに比べ、およそ70倍のスピードで他人に感染する一方、症状はそれらに比べてず
![オミクロン株は70倍の速度で感染、症状はより軽い可能性-香港大学](https://cdn-ak-scissors.b.st-hatena.com/image/square/e2752522e67a74abc8f4058805b06038635b8636/height=288;version=1;width=512/https%3A%2F%2Fassets.bwbx.io%2Fimages%2Fusers%2FiqjWHBFdfxIU%2Fip_TuQ09Z7kk%2Fv1%2F1200x800.jpg)