What Is A Novel Coronavirus?

A “novel” coronavirus means that it is a new coronavirus and it has not been previously identified in humans. It also means that it is different from old coronaviruses that caused SARS in 2002 and MERS in 2012.

How many Coronaviruses are known to cause disease in humans?

The following 7 coronaviruses are known to cause disease in humans.

Common human coronaviruses:

These 4 human coronaviruses cause symptoms of “common cold.”

  1. 229E (Alpha Coronavirus)
  2. OC43 (Alpha Coronavirus)
  3. NL63 (Beta Coronavirus)
  4. HUK1 (Beta Coronavirus)

Other human coronaviruses

These 3 human coronaviruses cause serious lung infections, like pneumonia.

  1. SARS-CoV (Severe Acute Respiratory Syndrome, or SARS)
  2. MERS-CoV (Middle East Respiratory Syndrome, or MERS)
  3. SARS-CoV-2 (Current pandemic known as COVID-19)