Role Of Vaccines Against COVID-19 Pandemic

Coronaviruses (CoV) are one of the largest families of viruses that infect human beings causing mild common cold or severe diseases like Middle East Respiratory Syndrome (MERS-CoV) , and Severe Acute Respiratory Syndrome (SARS-CoV). A new strain emerged known as novel coronavirus (nCoV) causing fatal respiratory failure disease. This virus was characterized by rapid spread from asymptomatic and symptomatic patients to healthy people. Thus, vaccine should be considered as one of the important protective measures to control the spread of this virus. One of the challenges to this vaccine is the high mutation rate of this virus and appearance of new strains. Therefore, vaccine should stimulate the immune system in order to overcome the emergence of new strain of this virus.