The U.S. Centers for Disease Control and Prevention (CDC) recently published an early release (Volume 30, Number 9—September 2024) review of 14 studies in Emerging Infectious Diseases. These researchers wrote that despite the effectiveness of measles-containing vaccines, infection remains possible in immunized persons.
They confirmed measles in persons with secondary vaccination failure (SVF) may be less infectious than cases in unvaccinated persons.
All included studies reported a meager attack rate (0%–6.25%) and Reff (0.063 [95% CI 0.0–0.5]).
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