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(Reuters) - Johnson & Johnson's COVID-19 vaccine candidate should hopefully show high effectiveness of 80% to 85%, the chief adviser for Operation Warp Speed Moncef Slaoui said on Wednesday.
"My expectation is high efficacy," Slaoui said at a J.P.Morgan healthcare conference, noting that he hoped anything at 80% or above would receive emergency use authorization in the U.S.
The vaccine, not yet authorized for emergency use in the United States, is in late-stage trials as a single dose vaccine, in contrast to rival two-shot vaccines from Pfizer Inc and Moderna Inc.
Operation Warp Speed is the U.S. government's program to develop and distribute COVID-19 vaccines.
(Reporting by Manojna Maddipatla in Bengaluru; Editing by Shounak Dasgupta)