Streptococcus pneumoniae
Resistant pneumococcal strains are called penicillin-resistant pneumococci (PRP), penicillin-resistant "Streptococcus pneumoniae" (PRSP), "Streptococcus pneumoniae" penicillin resistant (SPPR) or drug-resistant "Strepotococcus pneumoniae" (DRSP). In 2015, in the US, there were an estimated 30,000 cases, and in 30% of them the strains were resistant to one or more antibiotics.