SARS-CoV-2 is a new coronavirus responsible for the COVID-19 pandemic. It is a highly contagious virus that mainly spreads when an infected person talks, coughs, or sneezes, releasing saliva or mucus. COVID-19 symptoms can vary widely, ranging from mild to severe, and may include fever, cough, shortness of breath, fatigue, muscle or body aches, loss of taste or smell, sore throat, stuffy nose, upset stomach, or diarrhea. In severe cases, COVID-19 can lead to pneumonia, severe breathing problems, organ failure, and death, particularly in older adults and those with underlying health conditions. Preventive measures such as wearing masks, staying away from crowded places, frequent handwashing, and vaccination have been essential in controlling the spread of the virus and reducing the impact of the pandemic.

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