ID: 105
Category: Virus
CreatedBy: 1
UpdatedBy: 1
createdon: 14 Jul 2017
updatedon: 01 Apr 2023

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Author: Khoa Tran
Published Jul 14, 2017
Updated Apr 01, 2023

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Coronavirus Disease

Etymology and Pronunciation

Coronavirus Disease
The name "coronavirus" was coined to describe this family of viruses, which includes the SARS-CoV-2 virus responsible for COVID-19.

Corona (kuh-roh-nuh)
corona - Latin for "crown" or "garland". Referencing a virus' characteristic appearance under electron microscopy that resembles a crown or halo.
Coronavirus Disease (COVID-19) is a respiratory illness caused by the SARS-CoV-2 virus that has caused a global pandemic. Covid-19 was first identified in Wuhan, China in 2019, and has since spread to become a global pandemic, affecting millions of people worldwide. The virus can affect people of all ages, but older adults and people with underlying health conditions are at higher risk of severe illness. The virus is spread from person to person through respiratory droplets, usually when an infected person talks, coughs, or sneezes. It is also possible to get infected by touching a surface contaminated with the virus and then touching your face.

The symptoms of COVID-19 can range from mild to severe and can include fever, cough, shortness of breath, fatigue, body aches, and loss of taste or smell. In some cases, the disease can lead to hospitalization and can be severe, leading to pneumonia, acute respiratory distress syndrome (ARDS), and even death, especially in older adults or people with underlying health conditions such as diabetes, heart disease, or lung disease.

Diagnosis of COVID-19 can be done through several tests, including PCR tests, antigen tests, and serological tests. PCR tests detect the genetic material of the virus in a sample taken from the upper respiratory tract, while antigen tests detect proteins from the virus in a sample from the upper respiratory tract. Serological tests detect antibodies in the blood that indicate a past infection.

Causes of Coronavirus Disease

The virus spreads primarily through respiratory droplets that are released when an infected person talks, coughs, or sneezes. These droplets can land on surfaces and objects, where they can be picked up by others who touch their face or mouth. The virus can also be transmitted by airborne particles in poorly ventilated indoor spaces.

There are several factors that can contribute to the spread of the virus, including:

- Close contact with infected individuals: The virus can spread easily from person to person in close contact situations, such as living in the same household or working in the same office.
- Large gatherings: Crowded spaces where people are in close proximity to one another, such as concerts or sporting events, can facilitate the spread of the virus.
- Poor ventilation: Indoor spaces with poor ventilation can allow the virus to accumulate in the air, increasing the risk of transmission.
- Lack of hygiene: Not washing hands regularly, not covering coughs and sneezes, and not wearing a mask can increase the risk of transmission.

Treatments for Coronavirus Disease

Treatment for COVID-19 can range from supportive care to hospitalization, depending on the severity of the illness. Supportive care can include oxygen therapy and medications to manage symptoms. Antiviral therapy is also available for some patients with severe illness.

Prevention of COVID-19 is crucial in controlling the spread of the disease. This can be done through several measures such as vaccination, which helps to build immunity to the virus. Other measures include practicing good hand hygiene, wearing masks, avoiding close contact with others, practicing social distancing, and avoiding large gatherings.

Community spread of COVID-19 can be monitored and contained through contact tracing, which involves identifying and isolating people who have been in close contact with someone who has tested positive for the virus. Due how many people are infected, the virus has mutated and many new variants are found every year. Many nations use quarantine and isolation are as measures to prevent the spread of the virus.


Loss of taste or smell
Sore throat
Difficulty breathing
Muscle or body aches

Confirmation Tests

- Nasal swab
- Antigen test
- RT-PCR test