References COVID-19 Leading indicator dashboard for China 1. Case fatality ratio calculated as (deaths on day X) / (cases on day X). Previous versions of this dashboard calculated CFR = (deaths on day X)/ (cases on day X-7) to account for incubation. 2. Measures movement of population into destinations as of 3/15/2020 3. Wuhan included only for comparison 4. 7-day average (9-Mar to 16-Mar) compared to 2019 5. Car traffic only. Congestion reflects % increase in travel time compared to free-flow conditions Note: All countries and regions have documented third-generation cases Region-specific details 1. Case fatality rate calculated as (deaths on day X) / (cases on day X). Dashboards before February 29 calculated CFR as (deaths on day X)/ (cases on day X-7) to account for incubation. 2. Assessment based on observed stoppage in growth of cases and medical community’s opinion validated by external sources 3. Anecdotal reports of airline suspensions based on press searches 4. Based on representative cities: Tokyo, Singapore, Milan, Paris, Berlin, Madrid, Los Angeles 5. 0 new reported cases in US on 3/15 likely a reporting anomaly and not indicative of overall trend 6. Crude case fatality ratio likely to fall as testing becomes more widely available 7. Epidemiological data current as of 3/15 WHO Situation Report Note: All countries or regions have documented third-generation cases McKinsey & Company 34

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