Fig. 1.

Daily incidence time series of Ebola virus disease onsets in 1976. Cases are coloured by route of transmission, as reported by the epidemiological investigation team (Breman et al., 1978). ‘Both’ indicates infections that could have come from syringe or person-to-person transmission; ‘other’ denotes alternative infection routes (mainly congenital). The dotted line corresponds to the hospital closure date (30th September). (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)