New York Times: One Dose of J.&J. Vaccine Is Ineffective Against Delta, Study Suggests

New York Times: One Dose of J.&J. Vaccine Is Ineffective Against Delta, Study Suggests. “The new study has not yet been peer reviewed nor published in a scientific journal, and relied on laboratory experiments. But it is consistent with observations that a single dose of the AstraZeneca vaccine — which has a similar architecture to the J.&J. vaccine — shows only about 33 percent efficacy against symptomatic disease caused by the Delta variant.”

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