What is COVID-19?
"COVID-19" is shorthand for COrona VIrus Disease 2019. It is a respiratory disease caused by the SARS-CoV-2 virus. It has spread from China to many other countries around the world, including the United States. Because COVID-19 has reached the level of world-wide pandemic, it can affect all aspects of daily life, including travel, trade, tourism, food supplies, and financial markets.
Ultrastructural morphology of COVID-19
Symptoms of COVID-19
Infection with SARS-CoV-2, the virus that causes COVID-19, can cause illness ranging from mild to severe and, in some cases, can be fatal.
- Most people experience symptoms such as fever (the most common symptom), dry cough, shortness of breath, and general aches and pains.
- Others may also experience sputum production, headache, spitting up blood, or diarrhea. Some people infected with the virus have reported experiencing other non-respiratory symptoms. Other people, referred to as asymptomatic cases, have experienced no symptoms at all.
According to the CDC, symptoms of COVID-19 may appear in as few as 2 days or as long as 14 days after exposure.
Knowledge Check Choose the best answer for the question.
1-2. COVID-19 is caused by _____.
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