COVID-19:-- As we know that the world is passing through a very dreadful situation in form of Novel Corona Virus (SARS CoV-2) since 2 years. This virus was originated in China and now it can be seen in almost every country in this world. There are lot of information, rumors about origin of Virus but for now we will discuss about symptoms and precautions of this novel virus.   Symptoms:--     The symptoms of this virus infection are very similar to normal cold and fever  as:- 1. Fever and high temperature.  2. Cough and sneezing.  3. Fatigue  4. Shortness in breathing  5. And even damaged lung and liver at last death.    Now we discuss about precautions and preventions. 1. Wearing A Mask:--        Mask is the most important part of our fight with COVID-19 . Research found that using a mask and maintain a distance of 2 meters can decrease the risk of infection 75% . But the biggest difficulty is that people aren'...