COVID-19 Response 

Access our COVID-19 Response homepage, with more information and resources during the COVID-19 pandemic, including what to do if you’re experiencing symptoms.


COVID Activities


COVID-19 Hospital Impact Model for Epidemics


CHIME, or COVID-19 Hospital Impact Model for Epidemics, is a tool that originates from the Predictive Healthcare team at Penn Medicine. For questions on how to use this tool see the User docs. Code can be found on Github

View daily updates: https://ictr.github.io/covid-19-county-R0/

CHIME uses the SIR model, which computes the theoretical number of people infected with a contagious illness in a closed population over time. The model consists of individuals who are either (S)usceptible, (I)nfected, or (R)ecovered. The epidemic proceeds via a growth and decline process. This is the core model of infectious disease spread and has been in use in epidemiology for many years.

CHIME has up-to-date projections and estimates the number of patients that will need hospitalization, ICU beds, and mechanical ventilation.