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Currently submitted to: JMIR Public Health and Surveillance

Date Submitted: Jun 21, 2020
Open Peer Review Period: Jun 20, 2020 - Jul 4, 2020
(currently open for review)

Warning: This is an author submission that is not peer-reviewed or edited. Preprints - unless they show as "accepted" - should not be relied on to guide clinical practice or health-related behavior and should not be reported in news media as established information.

Hospital Epidemics Tracker (HEpiTracker): Description and pilot study of a mobile app to track COVID-19 epidemics in hospital workers

  • Joan B Soriano; 
  • Esteve Fernandez; 
  • √Ālvaro de Astorza; 
  • Luis A P√©rez de Llano; 
  • Jose Alberto Fern√°ndez Villar; 
  • Dolors Carnicer-Pont; 
  • Bernardino Alc√°zar-Navarrete; 
  • Arturo Garc√≠a; 
  • Aurelio Morales; 
  • Mar√≠a Lobo; 
  • Marcos Maroto; 
  • Eloy Ferreras; 
  • Cecilia Soriano; 
  • Carlos del Rio; 
  • Lorena Vega-Piris; 
  • Xavier Basaga√Īa; 
  • Josep Muncunill; 
  • Borja G Cosio; 
  • Sara Lumbreras; 
  • Carlos Catalina; 
  • Jos√© Mar√≠a Alzaga; 
  • David G√≥mez Quil√≥n; 
  • Carlos Alberto Valdivia; 
  • Celia de Lara; 
  • Julio Ancochea; 



Hospital workers are the professional group more frequently and severely affected by the COVID-19 pandemic. Innovative tools are required to measure in real-time the symptoms compatible with COVID-19 and the spread of infection and testing within hospitals.


We aimed to develop and test a feasible easy-to-use tool to identify and track the symptoms of suspected COVID-19 in hospital workers.


We summarize the development of HEpiTracker, a new App to track COVID-19 epidemics in hospitals, and describe its pilot study. Hospital staff in nine centers in five regions (Andalucia, Balearics, Catalonia, Galicia, and Madrid) in Spain were invited to upload in their smartphone the App via, and to enter daily their body temperature, COVID-19 compatible symptoms and scoring of their general health, plus any serological test results with dates.


From 8 April to 2 June 2020, a total of 477 hospital staff participated. They were 323 (67.5%) female, with age 45.4¬Ī10.6 years, with 13.0% current- and 34.2% former-smokers. There were no significant differences by age (p=0.192) or sex (p=0.107) within centres. All sorts of health (n=329) and non-health (n=148) related professions participated. The daily report of symptoms was highly variable from the source population in each hospital, with a decline in adherence/participation after an initial peak in some hospitals, while in others participation rate was regularly poor.


HEpiTracker is a feasible, and already available tool to monitor COVID-19 and other epidemics in hospital workers, and already tested positively in real conditions. It is available in Spanish, Portuguese and English and may be a customized asset to be used in future COVID-19 pandemic waves and other environments. Clinical Trial: NCT04326400


Please cite as:

Soriano JB, Fernandez E, de Astorza √, P√©rez de Llano LA, Fern√°ndez Villar JA, Carnicer-Pont D, Alc√°zar-Navarrete B, Garc√≠a A, Morales A, Lobo M, Maroto M, Ferreras E, Soriano C, del Rio C, Vega-Piris L, Basaga√Īa X, Muncunill J, Cosio BG, Lumbreras S, Catalina C, Alzaga JM, G√≥mez Quil√≥n D, Valdivia CA, de Lara C, Ancochea J

Hospital Epidemics Tracker (HEpiTracker): Description and pilot study of a mobile app to track COVID-19 epidemics in hospital workers

JMIR Preprints. 21/06/2020:21653

DOI: 10.2196/preprints.21653


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