Invasive Streptococcus pyogenes after allograft implantation--Colorado, 2003. CDC. Invasive Streptococcus pyogenes after allograft implantation--Colorado, 2003.. Vol 52. United States; 2003. (MMWR MorbMortalWklyRep; vol 52; no 48). Read more about Invasive Streptococcus pyogenes after allograft implantation--Colorado, 2003. Google Scholar BibTex RTF Tagged MARC XML RIS