Outcomes of breakthrough COVID-19 infections in patients with hematologic malignancies.

By propensity score analysis, vaccination status was associated with a predicted benefit of vaccination of 2.3% that did not reach statistical significance, but a marked reduction in the absolute probability of hospitalization (22.9%).

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However, a higher proportion of unvaccinated individuals required hospitalization, and showed a trend toward a higher likelihood of requiring intubation with mechanical ventilation.

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