With the clock ticking on the urgent need to develop new antibiotics, the ongoing COVID-19 pandemic has given policy makers a sharp reminder that society should not lose focus on antibiotic resistance as well, which has the potential to dwarf COVID-19 in terms of deaths and economic costs. The Centers for Disease Control and Prevention, for example, noted in its Antibiotic Resistance Threats in the U.S. 2019 report that more than 2.8 million antibiotic-resistant infections occur each year, and more than 35,000 people die as a result. Against a universal decline in the effectiveness of antibiotics, there has been a renaissance of interest in using phage therapy, whose use has waxed and waned for almost a century.