A Covid-19 vaccine candidate has yielded positive data in early tests, according to findings released by US drugmaker Pfizer and Germany's BioNTech. Follow live updates:
From CNN Health's Jacqueline Howard
The companies announced these preliminary findings on Wednesday in a pre-print paper that shows participants in a Phase 1/2 study of the vaccine, called BNT162b1, responded to the immunization and it was found to be well tolerated. The Phase 1/2 study is ongoing. The data has not yet been published in a peer-reviewed medical journal.
Twelve participants received two 10 microgram doses 21 days apart; 12 received two 30 microgram doses 21 days apart; 12 received a single 100 microgram dose on day one; and nine received placebo, according to the study. "These preliminary data are encouraging, showing that BNT162b1 which exploits RBD SARS-CoV-2 as a target antigen is able to produce neutralizing antibody responses in humans at or above the levels observed in convalescent sera – and that it does so at relatively low dose levels. We look forward to providing further data updates on BNT162b1," Dr. Ugur Sahin, CEO and co-founder of BioNTech, said in a company press release on Wednesday.
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