BBCNEWS BBC News January 2, 2022 02:09:00
Last year. we have an effective vaccine or a series of vaccines we have. whether know that masks, especially high—quality masks, especially high—quality masks protect. we know about the mode of transmission which is mitigated by better ventilation and letter filtration indoors, especially. and we also know that the risk is lower outdoors. so based on this knowledge we know that if we deploy these tools effectively and get ahead of the outbreak rather than always following the outbreak, we can achieve reasonable effective control. . , achieve reasonable effective control. ., , ., ., control...