Vaxcyte is a clinical-stage vaccine company. Co. is developing conjugate and protein vaccines to treat bacterial infectious diseases. Co.'s primary vaccine candidate, VAX-24, is a 24-valent investigational pneumococcal conjugate vaccine (PCV) for the treatment of invasive pneumococcal disease and pneumonia. Co.'s second PCV candidate, VAX-XP, is designed to expand the breadth of coverage to greater than 30 strains without compromising immunogenicity due to carrier suppression. In addition, Co.'s pipeline includes VAX-A1, a conjugate vaccine candidate designed to treat Group A Strep and VAX-PG, a protein vaccine candidate targeting the keystone pathogen responsible for periodontitis.