Clonal Spread of Streptococcus pyogenes emm44 among Homeless Persons, Rennes, France

1. Urisman A, Molinaro RJ, Fischer N, Plummer SJ, Casey G, Klein EA, et al. Identifi cation of a novel gammaretrovirus in prostate tumors of patients homozygous for R462Q RNASEL variant. PLoS Pathog. 2006;2:e25. DOI: 10.1371/journal. ppat.0020025 2. Lombardi VC, Ruscetti FW, Das GJ, Pfost MA, Hagen KS, Peterson DL, et al. Detection of an infectious retrovirus, XMRV, in blood cells of patients with chronic fatigue syndrome. Science. 2009;326:585– 9. Epub 2009 Oct 8. DOI: 10.1126/ science.1179052 3. Erlwein O, Kaye S, McClure MO, Weber J, Wills G, Collier D, et al. Failure to detect the novel retrovirus XMRV in chronic fatigue syndrome. PLoS ONE. 2010;5:e8519. DOI: 10.1371/journal. pone.0008519 4. Groom HC, Boucherit VC, Makinson K, Randal E, Baptista S, Hagan S, et al. Absence of xenotropic murine leukaemia virus–related virus in UK patients with chronic fatigue syndrome. Retrovirology. 2010;7:10. DOI: 10.1186/1742-4690-7-10 5. van Kuppeveld FJ, de Jong AS, Lanke KH, Verhaegh GW, Melchers WJ, Swanink CM, et al. Prevalence of xenotropic murine leukaemia virus–related virus in patients with chronic fatigue syndrome in the Netherlands: retrospective analysis of samples from an established cohort. BMJ. 2010;340:c1018. DOI: 10.1136/bmj. c1018 6. Switzer WM, Jia H, Hohn O, Zheng H, Tang S, Shankar A, et al. Absence of evidence of xenotropic murine leukemia virus–related virus infection in persons with chronic fatigue syndrome and healthy controls in the United States. Retrovirology. 2010;7:57. DOI: 10.1186/1742-46907-57 7. Lo SC, Pripuzova N, Li B, Komaroff AL, Hung GC, Wang R, et al. Detection of MLV-related virus gene sequences in blood of patients with chronic fatigue syndrome and healthy blood donors. Proc Natl Acad Sci U S A. 2010;107:15874–9. DOI: 10.1073/pnas.1006901107 8. Buskila D, Atzeni F, Sarzi-Puttini P. Etiology of fi bromyalgia: the possible role of infection and vaccination. Autoimmun Rev. 2008;8:41–3. DOI: 10.1016/j. autrev.2008.07.023 9. McKay PG, Duffy T, Martin CR. Are chronic fatigue syndrome and fi bromyalgia the same? Implications for the provision of appropriate mental health intervention. J Psychiatr Ment Health Nurs. 2009;16:884–94. DOI: 10.1111/j.13652850.2009.01464.x 10. Dong B, Kim S, Hong S, Das GJ, Malathi K, Klein EA, et al. An infectious retrovirus susceptible to an IFN antiviral pathway from human prostate tumors. Proc Natl Acad Sci U S A. 2007;104:1655–60. DOI: 10.1073/pnas.0610291104