Researchers Utilize HERMES to Help Vaccinate More Children

May 12, 2014

May 12 — The HERMES Logistics Modeling Team, consisting of researchers from Pittsburgh Supercomputing Center (PSC), the University of Pittsburgh School of Engineering and the Johns Hopkins Bloomberg School of Public Health, have used HERMES, their modeling software, to help the Republic of Benin in West Africa determine how to bring more lifesaving vaccines to its children. The team reports its findings this month in the journal Vaccine.

Results from the HERMES model have helped the country enact some initial changes in their vaccine delivery system, which may lead to further changes nationwide.

“The paper outlines our engagement with the Benin Ministry of Health in which we worked to choose among some key redesign options of their vaccine supply chain,” says Shawn T. Brown, PhD, Director of Public Health Applications at PSC, Technical Lead of the HERMES team and first author. “It’s a clear use of computational modeling and simulation to help a government figure out how to get the vaccines that are so desperately needed to every child they can.”

The HERMES model also helped show the impact of adding the rotavirus vaccine to the nation’s supply chain. Rotavirus is a major cause of infant mortality in low-income nations, killing nearly half a million children annually, with the highest death rates in Africa and South Asia.

“These are major policy decisions that could affect millions of lives,” says Bruce Y. Lee, MD, MBA; Associate Professor of International Health and Director, Operations Research, International Vaccine Access Center, Johns Hopkins Bloomberg School of Public HealthScientific Lead of the HERMES team and co-author. “Our team’s goal has been to develop state-of-the art computational technology to help such decision-making around the world

The team used their HERMES (Highly Extensible Resource for Modeling Supply-chains) tool to evaluate different options of redesigning the Benin vaccine system being considered by the Benin Ministry of Health. These included maintaining the current national system; consolidating the nation’s system of 80 “commune-level” supply depots to a system of 34 “health-zone” depots; eliminating the commune level entirely; and splitting the seven current high-level “department” and “regional” stores into 12 new departments. The investigators also evaluated the effects of changing transportation routes.

The computational model favored the health zone approach along with changing transportation routes, which could save between $50,000 and $70,000 in initial expenses and $50,000 to $90,000 in annual costs compared with the other scenarios, while still reaching 99 to 100 percent of children. Through 2017, the improved plan would save Benin over $500,000 in total costs while improving vaccination rates and facilitating the rotavirus vaccine.

HERMES is a software platform that allows users to generate a detailed discrete event simulation model of any vaccine supply chain. This simulation model can serve as a “virtual laboratory” for policy makers, health officials, funders, investors, vaccine and other technology developers, manufacturers, distributors, logisticians and researchers to address a variety of questions in supplying vaccines as well as other health supplies.

With the support of the Agence de Médecine Préventive, which participated in all steps of this innovative project, the Benin Ministry of Health has launched a successful demonstration following the group’s pre-publication recommendations. The nation is now considering scaling the new system to the entire country.

About PSC

Pittsburgh Supercomputing Center (http://www.psc.edu) is a joint effort of Carnegie Mellon University and the University of Pittsburgh together with Westinghouse Electric Company. Established in 1986, PSC is supported by several federal agencies, private industry and the Commonwealth of Pennsylvania, and is a major partner in the National Science Foundation XSEDE program.

About IVAC

The International Vaccine Access Center (IVAC) aims to improve access to life-saving vaccines by ensuring that the evidence required for decision-making is generated and synthesized, made available to policy makers, and results in concrete action. IVAC’s work spans the fields of vaccine economics, epidemiology, clinical trials, modeling, advocacy and policy to address viral, bacterial and parasitic pathogens and disease syndromes. For more information, please visit: www.jhsph.edu/ivac.

About Agence de Médecine Préventive

Founded in 1972, AMP is a nonprofit organization with headquarters at the Institut Pasteur in Paris and offices in Benin, Burkina Faso, Côte d’Ivoire, and Senegal. AMP’s mission is to promote preventive medicine and public health by developing expertise and applied research in vaccinology; offering training in epidemiology and health program management; organizing scientific and technical meetings; and disseminating information on vaccinology and other health-related fields. For more information, please visit: www.amp-vaccinology.org/

Source: Pittsburgh Supercomputing Center

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