Emergence of Vaccine-derived Polioviruses, Democratic Republic of Congo, 2004–2011
Nicksy Gumede , Olivia Lentsoane, Cara C. Burns, Mark Pallansch, Esther de Gourville, Riziki Yogolelo, Jean Jacques Muyembe-Tamfum, Adrian Puren, Barry D. Schoub, and Marietjie Venter
Author affiliations: National Institute for Communicable Diseases, Johannesburg, South Africa (N. Gumede, O. Lentsoane, A. Puren, B.D. Schoub, M. Venter); University of Witwatersrand, Johannesburg (N. Gumede, B.D. Schoub); University of Pretoria, Pretoria, South Africa (M. Venter); Centers for Disease Control and Prevention, Atlanta, Georgia, USA (C.C. Burns, M. Pallansch); World Health Organization, Geneva, Switzerland (E. de Gourville); National Institute for Biomedical Research, Kinshasa/Gombe, Democratic Republic of Congo (R. Yogolelo, J.J. Muyembe-Tamfum)
Figure 2. . Yearly incidence of vaccine-derived polivirus type 2, Democratic Republic of Congo, 2004–2011. The total number of cases associated with vaccine-derived polivirus type 2 is graphed for each year according to date of onset of paralysis. Viruses that are not assigned to a lineage are categorized as unclassified. VDVPs, vaccine-derived PVs.
The opinions expressed by authors contributing to this journal do not necessarily reflect the opinions of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.