last week from an early-stage test that showed its vaccine raised levels of antibodies that fight the virus.Although stimulating production of neutralizing antibodies doesn’t prove a vaccine will be effective, it’s considered an important early step in testing. Results from testing in animals had already shown the Oxford-AstraZeneca shot provoked an immune response.
Most of the participants in the study received a single dose of vaccine. Astra will prioritize a two-shot regimen in future testing, Hill said.
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