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      The Role of Research in Viral Disease Eradication and Elimination Programs: Lessons for Malaria Eradication

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          Abstract

          Using their experiences from, and analysis of, global campaigns to eradicate smallpox, poliomyelitis, and measles, Myron Levine and colleagues derive lessons for malaria eradication.

          Abstract

          By examining the role research has played in eradication or regional elimination initiatives for three viral diseases—smallpox, poliomyelitis, and measles—we derive nine cross-cutting lessons applicable to malaria eradication. In these initiatives, some types of research commenced as the programs began and proceeded in parallel. Basic laboratory, clinical, and field research all contributed notably to progress made in the viral programs. For each program, vaccine was the lynchpin intervention, but as the programs progressed, research was required to improve vaccine formulations, delivery methods, and immunization schedules. Surveillance was fundamental to all three programs, whilst polio eradication also required improved diagnostic methods to identify asymptomatic infections. Molecular characterization of pathogen isolates strengthened surveillance and allowed insights into the geographic source of infections and their spread. Anthropologic, sociologic, and behavioural research were needed to address cultural and religious beliefs to expand community acceptance. The last phases of elimination and eradication became increasingly difficult, as a nil incidence was approached. Any eradication initiative for malaria must incorporate flexible research agendas that can adapt to changing epidemiologic contingencies and allow planning for posteradication scenarios.

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          Most cited references65

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          A human infection caused by monkeypox virus in Basankusu Territory, Democratic Republic of the Congo.

          This paper presents clinical and epidemiological information on a patient with smallpox-like disease, from whom a monkeypox-like virus was isolated. The patient was the first recognized human monkeypox case in medical history.
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            Outbreak of poliomyelitis in Hispaniola associated with circulating type 1 vaccine-derived poliovirus.

            An outbreak of paralytic poliomyelitis occurred in the Dominican Republic (13 confirmed cases) and Haiti (8 confirmed cases, including 2 fatal cases) during 2000-2001. All but one of the patients were either unvaccinated or incompletely vaccinated children, and cases occurred in communities with very low (7 to 40%) rates of coverage with oral poliovirus vaccine (OPV). The outbreak was associated with the circulation of a derivative of the type 1 OPV strain, probably originating from a single OPV dose given in 1998-1999. The vaccine-derived poliovirus associated with the outbreak had biological properties indistinguishable from those of wild poliovirus.
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              Cutting edge: long-term B cell memory in humans after smallpox vaccination.

              Memory B cells are a central component of humoral immunity, and yet little is known about their longevity in humans. Immune memory after smallpox vaccination (DryVax) is a valuable benchmark for understanding the longevity of B cell memory in the absence of re-exposure to Ag. In this study, we demonstrate that smallpox vaccine-specific memory B cells last for >50 years in immunized individuals. Virus-specific memory B cells initially declined postimmunization, but then reached a plateau approximately 10-fold lower than peak and were stably maintained for >50 years after vaccination at a frequency of approximately 0.1% of total circulating IgG(+) B cells. These persisting memory B cells were functional and able to mount a robust anamnestic Ab response upon revaccination. Additionally, virus-specific CD4(+) T cells were detected decades after vaccination. These data show that immunological memory to DryVax vaccine is long-lived and may contribute to protection against smallpox.
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                Author and article information

                Journal
                PLoS Med
                PLoS
                plosmed
                PLoS Medicine
                Public Library of Science (San Francisco, USA )
                1549-1277
                1549-1676
                January 2011
                January 2011
                25 January 2011
                : 8
                : 1
                : e1000405
                Affiliations
                [1 ]Fogarty International Center, National Institutes of Health, Bethesda, Maryland, United States of America
                [2 ]Sabin Vaccine Institute, Washington (D.C.), United States of America
                [3 ]Task Force for Global Health, Decatur, Georgia, United States of America
                [4 ]The Bill & Melinda Gates Foundation, Seattle, Washington, United States of America
                [5 ]Center for Biosecurity, University of Pittsburgh Medical Center, Baltimore, Maryland, United States of America
                [6 ]Christian Medical College, Vellore, India [retired]
                [7 ]Center for Vaccine Development, University of Maryland School of Medicine, Baltimore, Maryland, United States of America
                Author notes

                ICMJE criteria for authorship read and met: JGB CAdQ WRD WHF DAH TJJ MML. Agree with the manuscript's results and conclusions: JGB CAdQ WRD WHF DAH TJJ MML. Wrote the first draft of the paper: JGB DAH MML. Contributed to the writing of the paper: JGB CAdQ WRD WHF DAH TJJ MML. Wrote a section of the first draft of the paper; contributed to revisions and editing of the paper: TJJ.

                Article
                10-PLME-ES-5742R1-Appeal
                10.1371/journal.pmed.1000405
                3026693
                21311582
                6ab18ef2-0478-4a0d-9ec9-8cdcb5b33c68
                Breman et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
                History
                Page count
                Pages: 9
                Categories
                Review
                Infectious Diseases/Neglected Tropical Diseases

                Medicine
                Medicine

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