| Firstly, only surgical masks--not the regular kind (filtering nothing but dust) for household use--work (filtering about 85% of virus), and of course N95 is better (95% approx.); Secondly, keeping a surgical mask clean is very important--do NOT touch it with your dirty fingers! Please check it out in detail--again, from HK: http://www.cuhk.edu.hk/sars/mask.htm |
SARS Outbreak - How Bad Is It?