The US Food and Drug Administration (FDA) has granted Breakthrough Therapy designation for VAX-24, Vaxcyte’s 24-valent pneumococcal conjugate vaccine for the prevention of invasive pneumococcal disease. The decision was based on positive topline results from a Phase I/II proof-of-concept study, which evaluated the safety, tolerability and immunogenicity of VAX-24 in adults 18-64 years of age. […]