Coronavirus disease 2019 (covid-19) is an inflammation of the respiratory tract caused by a newly occurring coronavirus which was first identified in December 2019 in Wuhan, China. Genetic analysis of the virus shows that it is a betacoronavirus that is closely linked with SARS. Early coronavirus transmission was related to the animal market, indicating infection from animal to human. The lungs are the first and main COVID-19-affected organ of the body. The novel coronavirus rapidly invades cells in our lungs in the early days of an infection. COVID-19 is believed to target the airways lining epithelial cells that trap and remove stuff like pollen and viruses that fill our airways with debris and fluids. Any of the earliest COVID-19 findings also shown that patients with serious disease experience pneumonia in both lungs, followed by symptoms such as shortness of breath. Lung injury continues to accumulate for these individuals; which can lead to respiratory failure. That′s why listening to your body and taking care of any symptoms is critical, and keeping close.( According to, Health specialists believe that when an affected person coughs or sneezes the coronavirus exits the bloodstream through the nose or mouth by means of tiny droplets. Like other respiratory viruses, the infection ″seems to originate in the upper respiratory tract″ — the back of the throat and the nose — and causes symptoms characteristic of most upper respiratory infections, including fever and cough. In some people, however, the disease moves down the respiratory tract and settles in the lungs, where it can cause “intense inflammation” (pneumonia) in the tiny air sacs. These sacs are where gas exchange takes place between the lungs and the bloodstream. Most of the time, this gas exchange — oxygen into the body and carbon dioxide out — occurs easily, Dickson explains. However, “when you have an intense pneumonia, like COVID-19 is causing, those air spaces fill up with pus, they fill up with inflammation,” he says. And thicker pus-filled sacs make it more difficult for oxygen to pass from the lungs into the blood. Essentially: It becomes hard for a person to breathe. ( COVID-19 will affect the upper respiratory system (nose, sinuses and throat) with flu-like symptoms, the lower respiratory system (airways and lungs) with or without mucous cough, and breathing problems. When COVID-19 is serious, pneumonia or ARDS will come with it.