Browsing by Autor "Percy Halkyer"

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Cost-effectiveness of rotavirus vaccination in Bolivia from the state perspective
(Elsevier BV, 2011) Emily R. Smith; Emily Rowlinson; Volga Iñiguez; Kizee A. Etienne; Rosario Rivera; Nataniel Mamani; Richard Rheingans; Maritza Patzi; Percy Halkyer; Juan S. León
Interruption of Indigenous Measles Transmission in Bolivia since October 2000
(Oxford University Press, 2003) Rosario Quiroga; Oswaldo Barrezueta; Linda Venczel; Percy Halkyer; Fernando Gil; Eric Machicao; Mauricio Landaverde; Arturo Quiñonez; Héctor S. Izurieta
Measles incidence in Bolivia declined after the introduction of campaign strategies in the 1980s. From 1990 to 1993, the peak incidence of measles (59 cases/100,000 population) was in 1992. In 1994, after the goal of interruption of measles transmission was adopted, a national vaccination campaign targeting children <15 years old was conducted and achieved 96% coverage. During 1995-1997, cases declined, although routine coverage was <90% in most years. During 1998-2000, a nationwide epidemic occurred among 2567 case-patients, most of whom were unvaccinated. A national vaccination campaign, with strong supervision, was conducted during November and December 1999 and targeted areas with low coverage. Only 122 cases were confirmed in 2000, with the last confirmed case occurring in October. Crucial to the control of the outbreak were sufficient resources and political support, intensive local planning, door-to-door vaccination with strict supervision, and rapid house-to-house coverage monitoring that improved accountability at the local level and timely and thorough outbreak investigations.
Putting Safety First: Ensuring Safe Vaccination Practices During the 2006 Rubella Campaign in Bolivia
(Oxford University Press, 2011) Percy Halkyer; R. Azurduy; Miguel García Fuentes; A. M. Van Dick; Olivier Ronveaux
Over 3 weeks in 2006, 3826083 persons were vaccinated against rubella during a national immunization campaign in Bolivia. This campaign was the largest mass immunization campaign ever conducted in the country. Therefore, in addition to strategic and micro-planning and financial and social mobilization, issues of safety (eg, safe injection practices and waste management) were at the forefront of campaign preparations. Waste management practices were promoted through guidelines, training, and implementation of locally appropriate solutions. These experiences show that, with detailed planning and preparation, in addition to collaboration among key partners, effective management of waste during campaigns in low-income countries is both feasible and beneficial. However, challenges remain in implementing environmentally appropriate solutions. This campaign served as the launching pad for a focus on ensuring that proper waste management practices are used both in the routine immunization program and in subsequent campaigns across Bolivia.
Rotavirus genotype distribution during the pre-vaccine period in Bolivia: 2007–2008
(Elsevier BV, 2013) Rosario Rivera; Kristen Forney; Maria René Castro; Paulina A. Rebolledo; Nataniel Mamani; Maritza Patzi; Percy Halkyer; Juan S. León; Volga Iñiguez
Seroepidemiological trend of strongyloidiasis in the Bolivian Chaco (1987–2013) in the absence of disease‐specific control measures
(Wiley, 2017) Michele Spinicci; Fabio Macchioni; Antonia Mantella; Simona Gabrielli; Mimmo Roselli; David Rojo Mayaregua; Joaquín Monasterio Pinckert; Herlan Gamboa Barahona; Grover Adolfo Paredes; Percy Halkyer
The significant reduction in S. stercoralis seroprevalence in Bolivian Chaco cannot be explained by preventive chemotherapy or improved social-sanitary conditions. As the drop is seen in younger generations, it is consistent with little transmission occurring. However, the risk of transmission still exists, as prevalence is persistently high in older individuals, who present a potential reservoir due to the lifelong nature of S. stercoralis infections.