A booster dose of the COVID-19 vaccine restored efficacy to 95.6 per cent against the virus, including the Delta variant, data released by the company shows.
source https://www.smh.com.au/world/europe/pfizer-says-covid-19-booster-shot-showed-high-efficacy-in-large-study-20211022-p5926c.html?ref=rss&utm_medium=rss&utm_source=rss_feed
source https://www.smh.com.au/world/europe/pfizer-says-covid-19-booster-shot-showed-high-efficacy-in-large-study-20211022-p5926c.html?ref=rss&utm_medium=rss&utm_source=rss_feed
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