Health Ministry issued an advisory stating that the N 95 mask fitted with respiratory valves has failed to stop the spread of the virus and is against the measures taken to prevent infection.
N-95 masks with valves are not able to prevent the spread of coronavirus. When you exhale air goes out of the valve in the N-95 mask. If the person wearing this mask is infected, COVID-19 virus can spread through the exhaled air into the atmosphere. it does not really eliminate the risk of being infected.
In the letter Ministry of Health said, “It is to bring to your knowledge that the use of valved respirator N-95 masks is detrimental to the measures adopted for preventing the spread of coronavirus as it does not prevent the virus from escaping out of the mask
Now the Health Ministry says that instead of such masks, it is better to use a triple layer and mask made of cloth.
Health Minister Dr Harsh Vardhan also tweeted, ”Valve fitted N95 Mask not able to stop the spread of the COVID19. The N-95 mask fitted with perforated respirator is contrary to the rules adopted to prevent the spread of corona virus. All are urged to use a triple layer mask made of cloth and encourage others to do the same.”