Examples of efficacy in a Sentence
- In the planner's view, Rumsfeld had two goals: to demonstrate the efficacy of precision bombing and to "do the war on the cheap." —Seymour M. Hersh, New Yorker, 7 Apr. 2003
- Vaccines exist, but their efficacy against aerosolized plague is unknown. —Sharon Begley et al., Newsweek, 8 Oct. 2001
- … efficacy does not have to be demonstrated before homeopathic products are marketed. —Alison Abbott et al., Nature, 26 Sept. 1996
questioned the efficacy of the alarms in actually preventing auto theft
Recent Examples of efficacy from the Web
Former Fed officials said Powell did question the efficacy of some regulations, though his influence as a single member of the Fed’s board was limited.
Exondys 51 didn't show particularly impressive efficacy data in clinical trials, and some insurers have refused to cover the therapy barring more proof of a clinical benefit.
The state contends this is a significant point because the injection's safety and efficacy are a key issue in the lawsuit.
Now the efficacy of American leadership around the globe has come into question.
Ira Longini, a biostatistician who helped test the vaccine, tells Doucleff that while the efficacy was 100 percent during the trial, the vaccine is likely between 70 and 100 percent effective.
Carroll also cites the Contraceptive CHOICE project as evidence of the efficacy of contraception programs.
The difference between them is purely one of efficacy.
How did a man who understood better than most the relative safety and efficacy of inoculation choose wrong?
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'efficacy.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Synonymsedge, effectiveness, effectualness, efficaciousness, efficacity, efficiency, productiveness
Antonymsineffectiveness, ineffectuality, ineffectualness, inefficiency
Related Wordsability, capability, capacity; potency, puissance, strength
Near Antonymsinability, inadequacy, inadequateness, incompetence, incompetency
EFFICACY Defined for English Language Learners
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