A systematic review of immune pathogenesis of SARS-COV-2 infection


  • Shabarini Srikumar Tirunelveli Medical College, Tamil Nadu, India
  • Shridharan Perumal Department of General Medicine, Government Pudukottai Medical College, Tamil Nadu, India




SARS-CoV-2, Immune response, Pathogenesis


The coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) was declared a pandemic by the world health organization on March 11, 2020. The host immune response to SARS-CoV-2 appears to play a critical role in disease pathogenesis and clinical manifestations. SARS-CoV-2 causes direct activation of anti-viral immune responses and leads to the release of uncontrolled inflammatory mediators. These SARS-CoV-2-induced immune responses may lead to various other abnormalities like lymphopenia, thrombocytopenia and granulocyte and monocyte dysfunction, making the patient more prone to secondary infections by microorganisms, which may result in further further serious complications like septic shock, severe multiple organ dysfunction and eventually death. Therefore, mechanisms underlying immune abnormalities in patients with COVID-19 disease must be elucidated to guide clinical management of the disease. Rational management in combating the disease includes enhancing anti-viral immunity and inhibiting systemic inflammation, which is key to successful treatment.


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Systematic Reviews