In recent years, in places from Mexico to Asia, outbreaks of the flu cases have been matched to the outbreak in people wearing surgical masks. They wear masks believe that they offer at least a degree of protection against the flu. However, they may do more harm than good.
Many people are under the misconception that the mask is used by doctors to protect themselves from the patient when in fact the opposite is true. Surgical masks are designed to prevent saliva, mucus, etc. falling from the doctor to the open wounds of patients in the surgery. Masks are not typical doctor thought to offer any protection. You can buy disposable flu mask from various online sources.
For users to be protected from the flu mask, the mask must cover the face and holes must be smaller than viruses. Surgical masks do not even correspond to the face and offers a variety of openings for the virus to pass through. In addition, the flu virus can easily pass through the mask since a hole in the loom much larger than viruses.
Even expensive, masks qualities such as N-95, which can filter out 95% of particles down microns to.3 (and a human hair is about 100 microns in diameter) are not always effective in stopping the virus.
In addition to giving users a false sense of security, surgical masks can be counterproductive in other ways. By keeping the face warm and humid, many users of the mask may create conditions that help the virus survive and reproduce. Users can also more exposed to the virus when the mask is removed and discarded.