SIR模型.CDCconstructedtheEbolaResponsemodelingtoolinspreadsheet(availableathttp://dx.doi.org/10.15620/dc.24900)usingMicrosoftExcel2010andusedthemodeloestimatetheincreaseinEbolacasesinLiberiaandSierraeone(seeAppendixforadditionalresultsandtechnicalnotes).