https://socictopen.socict.org/files/original/3741463cb3800ddeb4a69fd96bf4171c.pdf 6dc39f5b09570a34ae01d35e15186580 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Coronavirus Description An account of the resource Dominio científico: Coronavirus Text A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text. Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource On the Time Shift Phenomena in Epidemic Models Creator An entity primarily responsible for making the resource Semra Ahmetolan, Ayse Humeyra Bilge, Ali Demirci, Ayse Peker-Dobie, Ayse Peker-Dobie Description An account of the resource In the standard Susceptible-Infected-Removed (SIR) and Susceptible-Exposed-Infected-Removed (SEIR) models, the peak of infected individuals coincides with the inflection point of removed individuals. Nevertheless, a survey based on the data of the 2009 H1N1 epidemic in Istanbul, Turkey displayed a time shift between the hospital referrals and fatalities. An analysis of recent COVID-19 data and the records for Spanish flu (1918–1919) and SARS (2002–2004) epidemics confirm this observation. We use multistage SIR and SEIR models to provide an explanation for this time shift. Numerical solutions of these models present strong evidence that the delay between the peak of R′(t) and the peak of J(t)=∑iIi(t) is approximately half of the infectious period of the epidemic disease. In addition, we use a quadratic approximation to show that the distance between successive peaks of Ii is 1/γi, where 1/γi is the infectious period of the ith infectious stage, and we present numerical calculations that confirm this approximation. Date A point or period of time associated with an event in the lifecycle of the resource 2020 Subject The topic of the resource covid-19, epidemic models, time shift, multistage Susceptible-Infected-Removed model, multistage Susceptible-Exposed-Infected-Removed model Identifier An unambiguous reference to the resource within a given context 10.3389/fphy.2020.578455 Source A related resource from which the described resource is derived Epidemiology and Health Publisher An entity responsible for making the resource available Korean Society of Epidemiology Coverage The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant Physics