The pharma giant may be heading for a new era of growth.A few years ago, Pfizer (PFE 0.37%) saw revenue soar to record heights thanks to coronavirus-related sales, from its vaccine Comirnaty and its treatment Paxlovid. On top of this, the company's blockbuster drugs in other treatment areas were going strong. But in recent times, this pharma giant has been going through something of a transition.In later stages of the pandemic, sales of coronavirus products flagged. To add to this bad news, investors focuse ...