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Covid-19 And Co-Infections: An Overview Of Ace2 Mediated Viral Entry Of Sars-Cov-2 And Multiorgan Failure In Covid-19

COVID-19 is highly fatal disease having high mortality rate and is declared as pandemic situation by world health organization. It shows a clear indication that every individual is at risk of this pandemic especially older individual and immunocompromised persons. As its casual agent is SARS-Cov-2 and the main target site of this virus is the ACE2 receptor of lungs. But as compared to lungs ACE2 receptor is highly expressed in other organs i.e. kidney, liver, brain, GI tract, cutaneous, adipose tissues and cardiovascular system these organs are susceptible to COVID-19 infections because of having ACE2 receptor. Many co-infections associated with COVID-19 are reported i.e. neurological manifestation of COVID-19, cutaneous manifestations of COVID-19, endothelial cell infection and endotheliitis, adipose tissues infections, cerebral hemorrhage, liver injury, cardiovascular complications, kidney infection, trigger immune system response and subsequent organ failure. In this review we highlight ACE2 mediated viral entry of the SARS-Cov-2 and subsequent multi organ failure in COVID-19.