Surgical mask-How you can test before buying and using a mask?

WHO gave Corona Virus, a name that is Covid-19. Last week I have published a blog about one of the protection methods, that is wearing a surgical mask. In that blog I tried to cover different aspects of mask like What is a surgical mask?, Why masks are use?, What are standards for a maskContinue reading “Surgical mask-How you can test before buying and using a mask?”