A second Covid-19 vaccine appears highly effective in preventing the illness following exposure to the virus.
US biotech company, Moderna, said that its vaccine is 94.5% effective, according to analysis of its clinical trial.
It comes a week after Pfizer and BioNTech said their vaccine was over 90% effective.
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Speaking this morning before the announcement, Professor of Immunology at Trinity College Dublin, Luke O'Neil says it's an amazing result.
