Even though the aCovid-19 virus is hosted by bats, some particular subtype might affect other mammals too, including humans. In a direct manner the virus is contacted from infected birds, mostly domestic poultry but sometimes wild birds also can infect hunters, tribal people, etc. Within an indirect manner the problem can enter the human system via food items contaminated with the virus, polluted water, objects, air, food, etc. by the bodily secretions or excretions of infected birds. The flu virus being airborne, the contamination within the air might be reasonably high, in the event of epidemic or pandemic proportions. Infected people carry the flu virus with them wherever they travel and spread it in air and on objects they touch via their nasal secretions and bodily discharges.
Personal Protective Equipment or PPE because they are called are equipments designed for health care professionals to make use of should they be employed in contaminated environments. Nose and mouth respirators or ‘Masks’ are the types most generally used. Bird flu masks are incredibly specific pertaining to the fact that the bird flu virus is microscopic and is also not easily filtered out of the environment using conventional filters.
These masks are created on the guidelines offered by National Institute for Occupational Safety and Health (NIOSH). Based on filtering efficiency, filters found in the Mask fall under 3 categories, namely Type 95, Type 99 and kind 100. The proportions of microscopic (.3 micron wide) particles filtered out by these filters are 95%, 99% and 99.7%, respectively. Even the filters are categorized based on filter efficiency degradation and therefore are hence labeled as, N (non-immune to oil), R (oil resistant) and P (oil proof). Each individual mask is tested in laboratory settings before being approved for sale. But N95 ones are disposable and can not be cleaned.
The most frequent ones are N-95 filtering respirators that have been approved by NIOSH (also called as Filtering Facepieces) for being effective drastically cutting down exposure risks to airborne viruses like SARS or Avian Influenza. The usage of masks is suggested to individuals doing work in high contamination situations, like health care workers attending to patients, or field workers involved in destroying the problem sources, etc.
Another set of very powerful, protective masks are Powered Air-Purifying Respirators (PAPRs). They are more efficient than N-95 masks in offering better protection. They are utilized by persons who cannot wear N-95 masks, like individuals with facial hair. This battery operated mask has a face piece with breathing tube and filters.
Even though any mask is not a warranty against influenza infection, they dramatically cut down the probability of infection from airborne viruses. It remains to be said however, the capabilities in the masks degrade over time quprnl usage. Aerosols, if contained in the working environments, degrade filters even more. Hence, N95 Mask should not be used in combination with 100% reliance, but only as among the preventive tool. Much more, you will find guidelines that ought to be followed while (re)using such PPE. It is actually hence clear the best defense fails to lie in almost any level of measures taken but rather inside the knowledge in which they may be implemented.