A single dose of Johnson & Johnson's experimental COVID-19 vaccine produced a strong immune response against the novel coronavirus in an early-to-mid stage clinical trial, according to interim...
source https://www.ndtv.com/world-news/johnson-johnson-covid-19-vaccine-produces-strong-immune-response-in-early-trial-2301248
source https://www.ndtv.com/world-news/johnson-johnson-covid-19-vaccine-produces-strong-immune-response-in-early-trial-2301248
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