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Origin of efficacious
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What are other ways to say efficacious?
The adjective efficacious describes things that are capable of having the desired result or effect. But efficacious isn’t quite the same as effectual, effective, or efficient! Find out why on Thesaurus.com.
Example sentences from the Web for efficacious
Several days later, however, the company issued another press release including additional data that showed the vaccine is 76% efficacious in protecting people from disease.
In the trial, the two-dose shot—developed by the British-Swedish multinational pharmaceutical company in conjunction with Oxford University—was also 100% efficacious in protecting people from severe symptoms and hospitalization from the disease.AstraZeneca's U.S. Study May Answer Some of the Lingering Questions About Its Vaccine|Alice Park|March 22, 2021|Time
The first dose of the Moderna shot was 92% efficacious after two weeks.Should the US start prioritizing first vaccine doses to beat the variants?|Niall Firth|March 2, 2021|MIT Technology Review
Some have already raised questions about Johnson & Johnson’s preliminary results, asking why people would take a vaccine that’s only 72 percent efficacious in the United States when the Pfizer and Moderna vaccines are 95 percent efficacious.
The funny thing about a global pandemic is that you don’t have a control group, so we won’t ever know exactly how efficacious it was.People Are Finally Downloading COVID-19 Exposure Notification Apps. Will They Make a Difference?|Alejandro de la Garza|December 14, 2020|Time
But Michele Bachmann, who has been a wallflower of late, may point the way to a more efficacious line of attack: crony capitalism.
I asked him if he thought cattle cars would be an efficacious means of transporting the Palestinians to their new homes.
He inclines to the use of the tepid bath, as likely to be the most generally efficacious.The Ladies' Book of Etiquette, and Manual of Politeness|Florence Hartley
I know not how to offer advice, and I am incapable of giving any efficacious help.
I can say from experience, that it is a powerful sudorific, and very efficacious in a cold.
However much the theologian may believe in prayer, he cannot deny that it is less efficacious than action.Ancient Faiths And Modern|Thomas Inman
The commissioners regarded the land purchase act as embodying the most simple and efficacious remedy for existing evils.History of Prince Edward Island|Duncan Campbell