Omicron is still relatively fast spreading through aerosols. New coronavirus can be transmitted over longer distances by the airborne route, i.e., by inhalation of virus particles that remain in the air after a certain time and distance, but the extent to which this mode of transmission contributes to a pandemic is uncertain. The virus may be airborne over longer distances in poorly ventilated enclosed spaces, where respiratory droplets may form aerosols or be carried by air masses when talking, coughing, or sneezing, and spread horizontally over distances of more than 6 feet (2 meters). Personal protective measures to reduce the risk of transmission include wearing masks in public places, washing hands frequently, practicing respiratory hygiene, maintaining body distance, and avoiding congregations, poorly ventilated areas, and close contact with ill persons.