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COVID-19 Population Immunity Calculator
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Calculations

Natural infection rate (% already infected):
0.25
Total population vaccination rate (with 1+ dose):
0.65
Vaccination rate among previously infected individuals
(should be slightly lower than the total vaccination rate):
0.55
Average vaccine efficacy:
0.85
Average natural immunity efficacy:
0.85
Average vaccine + natural immunity efficacy:
0.95

Vaccination rate among those with no previous infection:
0.6833333333333332
% vaccinated only (no past infection):
0.5125
% past infection only (no vaccination):
0.0875
% both vaccinated and past infection:
0.1625
Total % vaccinated or past infection (sum of prev 3 rows):
0.7625

% with immunity via vaccination only:
0.43562499999999993
% with immunity via natural infection only:
0.074375
% with immunity via vaccination and natural infection:
0.15437499999999998
Total population immunity (sum of prev 3 rows):
0.6643749999999999
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