S drug-maker Pfizer has released preliminary data from late-stage human trials of the Covid-19 vaccine it developed with German biotech firm BioNTech. The vaccine has been found more than 90% effective.
S drug-maker Pfizer has released preliminary data from late-stage human trials of the Covid-19 vaccine it developed with German biotech firm BioNTech. The vaccine has been found more than 90% effective.
