Ama-coronaviruses angamanoveli angowohlobo lwe-β. I-COVIIL-19 yisifo esibuhlungu sokuphefumula. Abantu ngokuvamile bathambekele. Njengamanje, iziguli ezitheleleke yi-coronavirus yenoveli zingumthombo omkhulu wokutheleleka; Abantu abatheleleke nge-asymptomatic bangaba nomthombo othathelwanayo. Ngokusekelwe ophenyweni lwamanje lokuphenya, isikhathi sokufakwa kokufakwa yizinsuku ezi-1 kuye kwezingu-14, iningi lezinsuku ezi-3 kuye kwezingu-7. Ukubonakaliswa okuyinhloko kufaka umkhuhlane, ukukhathala kanye nokukhwehlela owomile. Ukuxinana kwamakhala, ikhala eligijimayo, umphimbo obuhlungu, i-myalgia kanye nesifo sohudo kutholakala ezimweni ezimbalwa.

 
Umkhuhlane uwukutheleleka okutheleleke kakhulu, ukutheleleka okunamandla, okuvuselelwa ngegciwane kwepheshana lokuphefumula. Ama-ejensi aqanjiwe alesi sifo ahlukahlukene ngokwehlukahluka, ama-virus angashadile angenawo ama-RNA abizwa ngama-virus anomkhuhlane. Kunezinhlobo ezintathu zamagciwane omkhuhlane: A, B, kanye no-C. Thayipha amagciwane yiwo okuvame kakhulu futhi ahlotshaniswa nobhuka kakhulu. Uhlobo lwe-B Virus lukhiqiza isifo esivame ukuba mncane kunalokho okubangelwa uhlobo lwe-Type A. Type C akukaze kuhlotshaniswe nobhubhane olukhulu lwesifo somuntu. Zombili izinhlobo ze-BA ne-B zingasakazwa ngasikhathi sinye, kepha imvamisa uhlobo olulodwa luyabusa ngesikhathi esithile.