Emerging and reemerging infection has emerged as a threat to human health in recent decades [1]. Given how interconnected the world is ,a pathogen capable of human-to-human transmission can spark an outbreak far of where it originated. The virus causing the Middle East Respiratory Syndrome, like, emerged in the Middle East but caused an outbreak in Korea. The whole world is the midst of the COVID-19 pandemic system which is caused by the SARS-CoV-2 virus. Lockdowns and travel restrictions imposed to halt the spread of COVID-19 have led to devastating economic repercussions in world. The control of an infectious disease is based on knowledge of its mode of transmission system.The recent moment COVID-19 pandemic is caused name the novel coronavirus, SARS-CoV-2, which is transmitted largely by the respiratory route very widly .

The best nonpharmaceutical interventions against disease spread via the respiratory route are broadly termed social , i.e., reducing close contact between individuals person . Where safe distancing is not possible, personal protective equipment (PPE) is the accepted mode of self-protection for everone.. Masks and respirators are arguably the most important piece of PPE system. They are a physical barrier to respiratory droplets that may enter through the nose and mouth and to the expulsion of mucosalivary droplets from infected individuals form others. Their role may be particularly important in COVID-19, where infected individuals may be shedding virus whish asymptomatic or presymptomatic.
article:

Emerging and reemerging infection has emerged as a threat to human health in recent decades [1]. Given how interconnected the world is ,a pathogen capable of human-to-human transmission can spark an outbreak far of where it originated. The virus causing the Middle East Respiratory Syndrome, like, emerged in the Middle East but caused an outbreak in Korea. The whole world is the midst of the COVID-19 pandemic system which is caused by the SARS-CoV-2 virus. Lockdowns and travel restrictions imposed to halt the spread of COVID-19 have led to devastating economic repercussions in world. The control of an infectious disease is based on knowledge of its mode of transmission system.The recent moment COVID-19 pandemic is caused name the novel coronavirus, SARS-CoV-2, which is transmitted largely by the respiratory route very widly .click 

The best nonpharmaceutical interventions against disease spread via the respiratory route are broadly termed social , i.e., reducing close contact between individuals person . Where safe distancing is not possible, personal protective equipment (PPE) is the accepted mode of self-protection for everone.. Masks and respirators are arguably the most important piece of PPE system. They are a physical barrier to respiratory droplets that may enter through the nose and mouth and to the expulsion of mucosalivary droplets from infected individuals form others. Their role may be particularly important in COVID-19, where infected individuals may be shedding virus whish asymptomatic or presymptomatic.