Epidemiology, Transmission, and Molecular Immunopathology of SARS-CoV-2

Adv Exp Med Biol. 2021:1352:33-44. doi: 10.1007/978-3-030-85109-5_3.

Abstract

Introduction: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-associated coronavirus pandemic has posed a global health emergency.

Methods: This chapter focuses on the epidemiology and transmission immunopathology of SARS-CoV-2 infection based on the available data on SARS-CoV-2 and other coronaviruses.

Results: The virus is transmitted by inhalation or contact with infected droplets, and the incubation period ranges from 2 to 14 days. The case fatality rate is estimated at 6%. Following binding with cell surface angiotensin-converting enzyme 2 (ACE2) receptor, the SARS-CoV-2 enters the host cell and replicates by using host machinery to cause disease.

Conclusions: Cytokine storm due to COVID-19 has challenged the treatment outcome.

Keywords: ACE2; COVID-19; Cytokines; Epidemiology; SARS-CoV-2; Spike protein transmission.

MeSH terms

  • COVID-19*
  • Humans
  • Pandemics
  • Peptidyl-Dipeptidase A / genetics
  • SARS-CoV-2*
  • Spike Glycoprotein, Coronavirus

Substances

  • Spike Glycoprotein, Coronavirus
  • Peptidyl-Dipeptidase A