PIGG and infection: The most common emm genotypes associated with contemporary severe invasive infections in the United States are emm1, emm28, emm12, emm3, and emm11 in 1995–1999 [35], emm1, emm3, emm28, emm12, and emm89 in 2000–2004 [36], and emm1, emm12, emm28, emm89, and emm3 in 2005–2012 [37].