Workers make medical protective masks at a factory in Nanchang, Jiangxi province. [Photo by Hu Guolin/For China Daily] A video, claiming the sterilization processes of masks leave carcinogens on the products, has raised concerns among the general public last week. 그래서, what exactly does happen during mask production? Is it really a cause for concern? 1. What is used to …

  Delta Variant Symptoms Are Similar The Delta strain does have similar symptoms to the original COVID strain but there are some important differences. 지금까지, 미각 및 후각 상실은 델타 변종의 일반적인 징후로 알려져 있지 않습니다.. 델타와 관련된 일반적인 증상은 다음과 같습니다.: • Sore throat • Runny nose • Fever • Headaches While fever …