Pfizer Chief Executive Albert Bourla said yesterday that the "biggest challenge" his pharmaceutical company faced during the coronavirus pandemic was the "political challenge."<br /><br />He made those remarks during an event discussing pandemic preparedness at the World Economic Forum in the Swiss Ski Resort of Davos.<br /><br />bourla said mask-wearing, vaccine efficacy and delivery of the jabs were all "severely politicised" and closed borders also made it difficult to deliver vaccines.
