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Use "efficacity" in a sentence
"We must also increase the monitoring of anti-malaria drug efficacity."
"When a person becomes a known risk, the insurance pays for their enrollment in a case-management system for that particualr illness, which essentially is the previous, with the uncertainty in the length and efficacity of their particular treatment transferred from the patient to the health-case provider."
"No, for there to be confidence in the efficacity of the sacrament of penance, it can't depend on the completely secret dispositions of the priest."