The new data, from the first set of complete results from the phase III trial, also showed that the vaccine produced no serious side effects. Pfizer vaccine is 95 per cent effective overall and protects 94 per cent of people over 65įurther data about the coronavirus vaccine being developed by US pharmaceutical company Pfizer and German biotechnology company BioNTech shows that it is 95 per cent effective for all age groups, and protects 94 per cent of adults over 65. A BioNTech laboratory in Mainz, Germany 18 November
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