Although 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 household poultry but sometimes wild birds also can infect hunters, tribal people, etc. Within an indirect manner the problem can enter the human system via edibles 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 in the air could be reasonably high, in cases of epidemic or pandemic proportions. Infected people carry the flu virus with them wherever they travel and spread it in air and also on objects they touch via their nasal secretions and bodily discharges.
Personal Protective Equipment or PPE since they are called are equipments created for health professionals to make use of should they be doing work in contaminated environments. Nose and mouth respirators or ‘Masks’ are those most generally used. Bird flu masks are very specific related to the truth that the bird flu virus is microscopic and is also not easily filtered out from the environment using conventional filters.
These masks are created on the guidelines provided by National Institute for Occupational Safety and Health (NIOSH). According to filtering efficiency, the filters utilized in the N95 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 upon filter efficiency degradation and are hence labeled as, N (non-resistant to oil), R (oil resistant) and P (oil proof). Every person 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 referred to as as Filtering Facepieces) as 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 healthcare workers attending to patients, or field workers associated with destroying the infection sources, etc.
Another set of very powerful, protective masks are Powered Air-Purifying Respirators (PAPRs). They are far better than N-95 masks in offering better protection. These are generally utilized by persons who cannot wear N-95 masks, like people with facial hair. This battery operated mask features a face piece with breathing tube and filters.
Even though any mask is not really an assurance against influenza infection, they dramatically cut down the likelihood of infection from airborne viruses. It remains to be said however, that the capabilities of the masks degrade as time passes quprnl usage. Aerosols, if found in the working environments, degrade the filters even more. Hence, Facial Mask should not be used with 100% reliance, only as one of the preventive tool. More so, there are guidelines that need to be adhered to while (re)using such PPE. It really is hence clear the best defense fails to lie in any level of measures taken but alternatively in the knowledge with which these are implemented.