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. Так, 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. До сих пор, потеря вкуса и обоняния не являются общими признаками варианта Дельта.. Общие симптомы, связанные с Дельтой:: • Sore throat • Runny nose • Fever • Headaches While fever …