A health worker shows the Sinovac vaccine against the Covid-19 coronavirus at a community health centre in Lambaro, Indonesia's Aceh province on Monday (Jan 18, 2021). - AFP
BEIJING, Jan 18 (Reuters): China's Sinovac Biotech said on Monday that a clinical trial in Brazil showed its Covid-19 vaccine was almost 20 percentage points more effective in a small sub-group of patients who received their two doses longer apart.
The protection rate for 1,394 participants who received doses of either CoronaVac or placebo three weeks apart was nearly 70%, a Sinovac spokesman said.
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