What are IFR, CFR, and attack rate?

Last updated: 27 March 2020 A confirmed case is, or should be, “a person with laboratory confirmation of COVID-19 infection” (as defined in WHO situation reports); but different countries apply different standards, and standards have changed over time in some countries. Confirmed cases are typically reported both on a daily and on a cumulative basis.Continue reading “What are IFR, CFR, and attack rate?”