Transmission routes for SARS-COV-2 infection: Review of Evidence

•Airborne transmission of SARS-COV-2 emphasizes the importance of using face masks in public, crowded and closed places as the most important preventive measure.•household contact tracing of index COVID-19 cases can be applied as important part of COVID-19 control programs.•Vertical transmission of SARS-COV-2 seems possible, but the risk is very low.•in theory, SARS-COV-2 may transmit through oral-anal intercourse, it is unlikely that this route will be a significant mean of transmission.•similarity of SARS-COV-2 with SARS, supports the hypothesis of non-transmission through blood.