(PFE, ENTA) Not long enough, or not powerful enough? Since Paxlovid is boosted with Ritonovoir one outlook could be that efficacy across ages, groups, or across progression could play a part in viral breakthroughs. A side by side test could answer that question. It may be that Paxlovid is not best in class. A more efficacious covid antiviral might have fewer breakthrough infections.
Per an NPR new story running this AM infections are rising again and people are struggling to get Paxlovid.