Abstract:

Since it was first reported in late 2019, SARS-Cov-2 had a global impact on human physical and mental health, as well as on their social life and economic endeavor. In one year, the virus has infected over 115 million people, killed almost 2.6 million of them and left many others with long-term health sequelae. The SARS-Cov-2 pandemic has overwhelmed healthcare systems, interrupted routine care and prevented patientsfollow-up. All these factors led to increased mortality from other chronic diseases. Further, the SARS-Cov-2 pandemic has caused an unprecedented disruption to education, economic trade, travel, social life, and has profoundly changed our way of living. In this review article we present the organization and the function of the immune system that protects us against diseases, the virology, the infection, the transmission and the pathogenesis of SARS-Cov-2, the disease Covid-19, the development of vaccines against SARS-Cov-2 and some of the questions raised by these vaccines, as well as suggested responses to them.

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