Visual Guide

Please note that in the chart above, and the graphs in this dashboard, the cohorts are color-coded as follows: Blue is Vaccinated; Green, Unvaccinated; Darker shades, Natural Immunity; Lighter Shades, NO Natural Immunity.

Original data The CDC report COVID-19 Cases and Hospitalizations by COVID-19 Vaccination Status and Previous COVID-19 Diagnosis January 28, 2022 / 71(4);125–131.

Cohort Overview

From the CDC report: COVID-19 Cases and Hospitalizations by COVID-19 Vaccination Status and Previous COVID-19 Diagnosis January 28, 2022 / 71(4);125–131.

We are using the California data (the most comprehensive in the report) from Table 1: “Cohort sizes and cohort-specific incident laboratory-confirmed COVID-19 cases in California (N = 752,781) and New York (N = 355,819) and hospitalizations in California (N = 56,177) — May 30–November 20, 2021.”

Total population for all cohorts: 21,734,330 people. Over 21 million. The population breakdown by cohort as follows.

1. Vaccinated: Prior Covid-19 Diagnosis @ 968,167 people or roughly 4.5%. Aka, “YES Natural Immunity: YES Vax.”
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2. Vaccinated: NO Prior Covid-19 Diagnosis @ 15,484,235 people or roughly 71.2%. Aka, “NO Natural Immunity: YES Vax.”
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3. Unvaccinated: Prior Covid-19 Diagnosis @ 1,370,782 people or roughly 6.3%. Aka, “YES Natural Immunity: NO Vax”
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4. Unvaccinated: NO Prior Covid-19 Diagnosis @ 3,911,146 people or roughly 18%. Aka, “NO Natural Immunity: NO Vax”
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Please consult the original CDC study (January 28, 2022 / 71(4);125–131) for further details.

Cohort Data Table

Cohort 3 vs. 2

Cohort 3 vs. 1 & 2

All Cohorts

Cohort 3 vs. 2

Cohort 3 vs. 1 & 2

All Cohorts