Updated COVID-19 Pandemic Planning Scenarios

CDC
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Updated September 10, 2020:

• The Infection Fatality Ratio parameter has been updated to include age-specific estimates
• The parameter for Number of Days from Symptom Onset to Seeking Outpatient Care—which was based on influenza care seeking data—has been replaced with the Median Number of Days from Symptom Onset to SARS-CoV-2 Test among SARS-CoV-2 Positive Patients
• A new parameter for the likelihood of an infection being reported has been added: The Ratio of Estimated Infections to Reported Case Counts

Table 1. Parameter Values that vary among the five COVID-19 Pandemic Planning Scenarios.
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