Abstract::
The coronavirus disease 2019 (COVID-19) is currently a new public health crisis threatening the world. This
pandemic disease is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The virus has been reported
to be originated in bats and by yet unknown intermediary animals were transmitted to humans in China 2019. The SARSCoV-
2 spreads faster than its two ancestors the SARS-CoV and Middle East respiratory syndrome coronavirus (MERSCoV)
but has reduced fatality. At present, the SARS-CoV-2 has caused about a 1.16 million of deaths with more than 43.4
million confirmed cases worldwide, resulting in a serious threat to public health globally with yet uncertain impact. The disease
is transmitted by inhalation or direct contact with an infected person. The incubation period ranges from 1 to 14 days.
COVID-19 is accompanied by various symptoms, including cough, fatigue. In most people the disease is mild, but in some
other people, such as in elderly and people with chronic diseases, it may progress from pneumonia to a multi-organ dysfunction.
Many people are reported asymptomatic. The virus genome is sequenced, but new variants are reported. Numerous biochemical
aspects of its structure and function are revealed. To date, no clinically approved vaccines and/or specific therapeutic
drugs are available to prevent or treat the COVID-19. However, there are reported intensive researches on the SARSCoV-
2 to potentially identify vaccines and/or drug targets, which may help to overcome the disease. In this review, we discuss
recent advances in understanding the molecular structure of SARS-CoV-2 and its biochemical characteristics.
Comparative analysis, distribution, and characterization of microsatellites in Orf virus genome
