The disease is believed to be transmitted primarily through close contact and through fine droplets produced by coughing, sneezing, or talking; this close contact corresponds to a radius of 1 to 2 meters (3 to 6 feet).
Ugonjwa huu huaminika kuambukizwa kimsingi wakati wa kuwa karibu na kwa matone yanayotoka wakati wa kukohoa, kupiga chafya, au kuzungumza; na mtu aliyekaribu kuwa mita 1 hadi 2 (futi 3 hadi 6).