The company released a statement on Monday, saying “We have temporarily paused further dosing in all our COVID-19 vaccine candidate clinical trials, including the Phase 3 Ensemble trial, due to an unexplained illness in a study participant.”
The vaccine was being tested in 60,000 participants across the US, Argentina, Brazil and several other countries.
In September, pharmaceutical company AstraZeneca paused clinical trials of an experimental COVID-19 vaccine after a participant in the UK had an unexplained illness, but the study has since resumed in the country.
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