efficacy
noun
the capacity for producing a desired result or effect.
efficacies
-
pluralof efficacy.plural
The grammatical form denoting more than one person, place, thing, or idea.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
For the next pandemic, if we have certain vaccines with starting efficacies, we can predict the minimum proportion we need to vaccinate to achieve vaccine-induced herd immunity.
From Scientific American ● Apr. 6, 2023
But Pfizer and Moderna’s vaccines have efficacies of 95 percent and 94.5 percent, respectively, at preventing moderate to severe disease.
From Slate ● Mar. 5, 2021
Still, the vaccines, shown in clinical trials to have efficacies of up to 95% against symptomatic disease, have finally given the world the prospect of an escape from COVID-19’s long siege.
From Science Magazine ● Feb. 16, 2021
Further tests would be needed to judge how much the 2P mutation contributes to the overall efficacies of the frontrunner vaccines.
From National Geographic ● Dec. 31, 2020
In the face of the Relief Pills exposure, Hal could no longer excuse his father on the ground that Dr. Surtaine honestly credited his medicines with impossible efficacies.
From The Clarion by William Dodge Stevens
