- RESPIRATORY BACTERIA & VIRUSES
- TROPICAL DISEASES
- IMMUNOSUPPRESSIVE VIRUSES
- BLOOD-BORNE VIRUSES
- ENTERIC VIRUSES
Coronavirus disease 2019 (COVID-19) is a disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)4. SARS-CoV-2 is a single-stranded, positive-sense RNA virus which is capable of person-to-person transmission. COVID-19 has spread to more than 20 countries within a month it was declared a pandemic on March 11, 2020. It is genetically highly related to SARS and MERS coronaviruses.
So far, seven coronavirus species including COVID-19 are known to infect human. Four viruses, including 229E, OC43, NL63 and HKU1, typically cause a mild cold. However, people infected with the other three, including SARS, MERS and COVID-19, may develop acute and severe respiratory diseases, fever, cough and even death.