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)

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