PEW CHARITABLE TRUSTS | The Pew Charitable Trusts has tracked the pipeline of antibiotics in clinical development since 2014 and has aggregated updates into an interactive tool that illustrates trends in the pipeline—as drugs are either approved, discontinued from development, or remain stagnant. The pipeline reflects concerns in the scientific and medical community regarding the dangerously low number of antibiotics in development to address current and future patient needs, particularly for treating the most urgent bacterial threats, such as Gram-negative pathogens, and those prioritized by the Centers for Disease Control and Prevention and the World Health Organization.