Write a paragraph of 150 words on "How COVID-19 Spreads" by answering the following questions.
(a) What is COVID-19? (b) How does the virus of COVID-19 spread from an infected person? (c) How does a healthy person receive the virus? (d) Which period is very dangerous for people?  (e) What can we do to prevent the spread of COVID-19?

How COVID-19 Spreads

Coronavirus disease (COVID-19) is an infectious disease caused by the SARS COV-2 virus. This disease spreads through close contact with an infected person. When an infected person coughs, sneezes, or talks, the virus of this disease spreads. The virus comes out through the nose and mouth in droplets and if a healthy person inhales the droplets, he or she will be affected too. The droplets can also sit on the surface of any object. When someone touches that surface with bare hands, the virus gets transmitted to his hands. After that, if the person touches his nose, mouth or eyes, the virus gets into his respiratory system. After getting infected, a person might expose no symptom for several days or weeks. This means the infected person may not show symptoms of sickness at the beginning. This period is very dangerous because the infected person can unknowingly affect other healthy people. To avoid infection, social distancing, wearing masks while staying outside, washing hands with soap 'and water frequently, or cleaning hands with hand sanitizers are essential. Besides, we can make our immune system stronger by following the health rules, taking nutritious food, drinking a lot of liquid and doing light exercise. Even after getting fully vaccinated, we'must follow these measures to prevent COVID-19.