The usual incubation period (the time between contamination and the appearance of symptoms) varies between one and 14 days; it is more often five days. A good example of uncertainty, the estimate of the proportion of people with COVID-19 who have lost their sense of smell was initially 30% before falling to 15%.
Kipindi cha kawaida ya kuwepo kwa dalili za ugonjwa (kipindi kati ya kuambukizwa na kuonekana kwa dalili) huanzia siku moja hadi 14; kwa kawaida ni siku tano.Kwa mfano wa kutokuwa na hakika, kadirio ya sehemu ya watu walio na COVID-19 waliopoteza hisia yao ya kunusa ilikuwa hapo awali 30% na baadaye ikashuka hadi 15%.