Researchers at the Johns Hopkins Bloomberg School of Public Health conducted an analysis of worldwide use of Haemophilus influenza Type b vaccine (Hib) to determine what factors influenced a nation's adoption of the vaccine.
The study found that a nation's eligibility for support from the Global Alliance for Vaccine and Immunization (GAVI) and whether a country's neighbors used the vaccine were major influencing factors in addition to price of the vaccine. The findings appear in the March 16 edition of PLoS Medicine.
"This study is the first to measure how countries' decisions to adopt new vaccines are highly influenced by their neighbors' decisions," said the study's lead author, Jessica Shearer, MHS, a former research associate at the Bloomberg School of Public Health.
"Countries seem to be engaging in an arms race to vaccinate -- decisions which will save millions of lives."
For the study, the researcher analyzed data on Hib use from 147 countries from 1990 to 2007. Models were developed to account for a nation's income and burden of Hib disease. According to the study, the receipt of GAVI support sped up the time on decisions to use Hib by 63 percent. The presence of two or more neighboring countries using Hib accelerated adoption by 50 percent. An increase in price negatively affected the time it took a country to adopt Hib vaccine, which substantiated the findings of previous studies. Added Shearer, "While high vaccine prices hinder adoption, the absence of long-term, stable financing policies at the global level had an even more detrimental effect."
The World Health Organization estimates 2.1 million people died worldwide in 2002 due to vaccine-preventable diseases. "GAVI has been hoping to accelerate the speed at which poor countries get access to life-saving vaccines. This study shows how successful these efforts have actually been," said David Bishai, MD, PhD, MPH, senior author of the study and associate professor in the Bloomberg School's departments of Population, Family and Reproductive Health and International Health.
Additional authors of "Accelerating Policy Decisions to Adopt Haemophilus influenza Type b Vaccine: A Global, Multivariable Analysis" are Meghan L. Stack, Marcie Richmond, Allyson P. Bear and Rana A. Hajjeh.
The research was funded by the Hib Initiative, which receives funding from the GAVI Alliance.
For more news from Johns Hopkins Bloomberg School of Public Health follow www.twitter/johnshopkinsSPH or visit www.jhsph.edu/publichealthnews.
Tim Parsons | EurekAlert!
Smart Data Transformation – Surfing the Big Wave
02.12.2016 | Fraunhofer-Institut für Angewandte Informationstechnik FIT
Climate change could outpace EPA Lake Champlain protections
18.11.2016 | University of Vermont
Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.
The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...
Broadband rotational spectroscopy unravels structural reshaping of isolated molecules in the gas phase to accommodate water
In two recent publications in the Journal of Chemical Physics and in the Journal of Physical Chemistry Letters, researchers around Melanie Schnell from the Max...
16.11.2016 | Event News
01.11.2016 | Event News
14.10.2016 | Event News
05.12.2016 | Power and Electrical Engineering
05.12.2016 | Materials Sciences
05.12.2016 | Power and Electrical Engineering