Probable causes of blood clotting driven by SARS-CoV-2

Coronavirus Disease 2019 (COVID-19) has transmitted almost all over the world after evolving from Wuhan, China in December 2019. The World Health Organization (WHO) declared COVID-19 outbreak a pandemic on March 11, 2020 [1]. COVID-19 is caused by Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) [2,3], which transfers from an infected person to a susceptible person via direct contact (e.g., handshaking, hugging) or indirect contact through touching materials or objects that are contaminated by an infected person (e.g., doorknob, handrail, paper tissue) [4,5]. It can also spread via airborne route (i.e., through aerosols created by expiratory activities) [6,7], which is a real concern. SARS-CoV-2 is a nanosized virus. It varies from 65 to 125 nm [8]. Having such a small size, SARSCoV-2 could likely be spread in airborne route.