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Allison Portnoy
Harvard University
ImmunologyVaccinationMeaslesMedicineEnvironmental health
11Publications
6H-index
269Citations
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Publications 13
Newest
Background Although the beneficial effects of vaccines on equity by socioeconomic status and geography are increasingly well-documented, little has been done to extend these analyses to examine the linkage between vaccination and gender equity. In this paper, evidence from the published literature is used to develop a conceptual framework demonstrating the potential impact of vaccination on measures of gender equity. This framework is then applied to human papillomavirus (HPV) vaccination in thr...
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#1Allison Portnoy (Harvard University)H-Index: 6
Last. Jane J. KimH-Index: 36
view all 7 authors...
Background: Data to inform evidence-based policy of human papillomavirus (HPV) vaccine delivery strategies in low- and middle-income countries are limited. We examined the cost-effectiveness of campaign compared with routine delivery strategies of adolescent female HPV vaccination in Uganda. Methods: We used a multiple modeling approach that captured HPV transmission, cervical carcinogenesis, and population demographics to project health and economic outcomes associated with HPV vaccination. Cos...
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#1Cristina Munk (Harvard University)
#2Allison Portnoy (Harvard University)H-Index: 6
Last. Nicolas A. Menzies (Harvard University)H-Index: 11
view all 7 authors...
Background In recent years, several large studies have assessed the costs of national infant immunization programs, and the results of these studies are used to support planning and budgeting in low- and middle-income countries. However, few studies have addressed the costs and cost-effectiveness of interventions to improve immunization coverage, despite this being a major focus of policy attention. Without this information, countries and international stakeholders have little objective evidence...
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#1Allison Portnoy (Harvard University)H-Index: 6
#2Mark Jit (Lond: University of London)H-Index: 37
Last. Stéphane Verguet (Harvard University)H-Index: 20
view all 6 authors...
Summary Background In the 21st century, increases in immunisation coverage and decreases in under-5 mortality have substantially reduced the global burden of measles mortality. However, the assessment of measles mortality burden is highly dependent on estimates of case-fatality ratios for measles, which can vary according to geography, health systems infrastructure, prevalence of underlying risk factors, and measles endemicity. With imprecise case-fatality ratios, there is continued uncertainty ...
4 CitationsSource
#1Allison Portnoy (Harvard University)H-Index: 6
#2Mark Jit (Lond: University of London)H-Index: 37
Last. Stéphane Verguet (Harvard University)H-Index: 20
view all 4 authors...
Abstract Background Measles supplementary immunization activities (SIAs) are vaccination campaigns that supplement routine vaccination programs with a recommended second dose opportunity to children of different ages regardless of their previous history of measles vaccination. They are conducted every 2–4 years and over a few weeks in many low- and middle-income countries. While SIAs have high vaccination coverage, it is unclear whether they reach the children who miss their routine measles vacc...
4 CitationsSource
#1Sachiko Ozawa (UNC: University of North Carolina at Chapel Hill)H-Index: 16
#2Samantha Clark (Johns Hopkins University)H-Index: 4
Last. Damian Walker (BMGF: Bill & Melinda Gates Foundation)H-Index: 12
view all 21 authors...
Objective To estimate the economic impact likely to be achieved by efforts to vaccinate against 10 vaccine-preventable diseases between 2001 and 2020 in 73 low- and middle-income countries largely supported by Gavi, the Vaccine Alliance. Methods We used health impact models to estimate the economic impact of achieving forecasted coverages for vaccination against Haemophilus influenzae type b, hepatitis B, human papillomavirus, Japanese encephalitis, measles, Neisseria meningitidis serogroup A, r...
27 CitationsSource
#1Leila A. Haidari (CMU: Carnegie Mellon University)H-Index: 9
#2Shawn T. Brown (CMU: Carnegie Mellon University)H-Index: 20
Last. Bruce Y. Lee (Johns Hopkins University)H-Index: 39
view all 10 authors...
BACKGROUND: Research has shown that the distance to the nearest immunization location can ultimately prevent someone from getting immunized. With the introduction of human papillomavirus (HPV) vaccine throughout the world a major question is whether the target populations can readily access immunization. METHODS: In anticipation of HPV vaccine introduction in Mozambique a country with a 2015 population of 25727911 our team developed Strategic Integrated Geo-temporal Mapping Application) to deter...
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#1Sachiko Ozawa (UNC: University of North Carolina at Chapel Hill)H-Index: 16
#2Simrun Grewal (UW: University of Washington)H-Index: 5
Last. Logan Brenzel (BMGF: Bill & Melinda Gates Foundation)H-Index: 7
view all 7 authors...
Abstract Novel vaccine development and production has given rise to a growing number of vaccines that can prevent disease and save lives. In order to realize these health benefits, it is essential to ensure adequate immunization financing to enable equitable access to vaccines for people in all communities. This analysis estimates the full immunization program costs, projected available financing, and resulting funding gap for 94 low- and middle-income countries over five years (2016–2020). Vacc...
3 CitationsSource
#1Sachiko Ozawa (UNC: University of North Carolina at Chapel Hill)H-Index: 16
#2Allison Portnoy (Harvard University)H-Index: 6
Last. Pallavi D. Patwardhan (MSD: Merck & Co.)H-Index: 7
view all 8 authors...
Vaccines save thousands of lives in the United States every year, but many adults remain unvaccinated. Low rates of vaccine uptake lead to costs to individuals and society in terms of deaths and disabilities, which are avoidable, and they create economic losses from doctor visits, hospitalizations, and lost income. To identify the magnitude of this problem, we calculated the current economic burden that is attributable to vaccine-preventable diseases among US adults. We estimated the total remai...
27 CitationsSource
#1Sachiko Ozawa (Johns Hopkins University)H-Index: 16
#2Samantha Clark (Johns Hopkins University)H-Index: 4
Last. Damian Walker (BMGF: Bill & Melinda Gates Foundation)H-Index: 12
view all 6 authors...
An analysis of return on investment can help policy makers support, optimize, and advocate for the expansion of immunization programs in the world’s poorest countries. We assessed the return on investment associated with achieving projected coverage levels for vaccinations to prevent diseases related to ten antigens in ninety-four low- and middle-income countries during 2011–20, the Decade of Vaccines. We derived these estimates by using costs of vaccines, supply chains, and service delivery and...
63 CitationsSource
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