Public Health Commons^™

Reassessing Google Flu Trends Data For Detection Of Seasonal And Pandemic Influenza: A Comparative Epidemiological Study At Three Geographic Scales, Donald R. Olson, Kevin J. Konty, Marc Paladini, Cecile G. Viboud, Lone Simonsen

Global Health Faculty Publications

The goal of influenza-like illness (ILI) surveillance is to determine the timing, location and magnitude of outbreaks by monitoring the frequency and progression of clinical case incidence. Advances in computational and information technology have allowed for automated collection of higher volumes of electronic data and more timely analyses than previously possible. Novel surveillance systems, including those based on internet search query data like Google Flu Trends (GFT), are being used as surrogates for clinically-based reporting of influenza-like-illness (ILI). We investigated the reliability of GFT during the last decade (2003 to 2013), and compared weekly public health surveillance with search query …

Does Comorbidity Increase The Risk Of Mortality Among Children Under 3 Years Of Age?, Christa L. Fischer Walker, Jamie Perin, Jodi L. Liu, Joanne Katz, James M. Tielsch, Robert Black

Global Health Faculty Publications

Objectives Diarrhoea and pneumonia remain leading causes of morbidity and mortality in children under 5 years of age. Little data is available to quantify the burden of comorbidity and the relationship between comorbid diarrhoea and pneumonia infections and mortality. We sought to quantify the relationship between comorbidity and risk of mortality among young children in two community-based studies conducted among South Asian children.

Design Secondary data analysis of two cohort studies.

Participants We identified two cohort studies of children under 3 years of age with prospective morbidity at least once every 2 weeks and ongoing mortality surveillance.

Outcome measures We …

Is Health Diplomacy Keeping Pace With Global Health Developments? Implications For Access To Medicines Strategies In The Post-2015 Mdg Framework, Samantha Ski, Rachel Kiddell-Monroe, James M. Sherry

Global Health Faculty Publications

As the 2015 deadline to achieve the Millennium Development Goals (MDGs) draws near, efforts to ensure access to essential medicines face new challenges in light of new resource constraints. To help assess those challenges, a summary analysis of published data was undertaken to examine the increasing discontinuity between the geographic focus of donor-country programs on low-income countries (LICs) and the geographic location of the increasing majority of the poor and the global burden of preventable disease within middle-income countries (MICs). This disconnect has put new pressure on both donor and government resources for essential medicines, prompting greater consideration of strategies …

Smoking Behaviours And Cessation Services Among Male Physicians In China: Evidence From A Structural Equation Model, Cheng Huang, Chaoran Gao, Shaohua Yu, Yan Feng, Julia Song, Michael Erikson, Pam Redmon, Jeffrey Koplan

Global Health Faculty Publications

Objective To investigate smoking prevalence and cessation services provided by male physicians in hospitals in three Chinese cities.

Methods Data were collected from a survey of male physicians employed at 33 hospitals in Changsha, Qingdao and Wuxi City (n=720). Exploratory factor analysis was performed to identify latent variables, and confirmatory structural equation modelling analysis was performed to test the relationships between predictor variables and smoking in male physicians, and their provision of cessation services.

Results Of the sampled male physicians, 25.7% were current smokers, and 54.0% provided cessation services by counselling (18.8%), distributing self-help materials (17.1%), and providing traditional remedies …

National And Regional Estimates Of Term And Preterm Babies Born Small For Gestational Age In 138 Low-Income And Middle-Income Countries In 2010, Anne C.C. Lee, Joanne D. Katz, Hannah Blencowe, Simon Cousens, Naoko Kozuki, James M. Tielsch, +30 Additional Authors

Global Health Faculty Publications

Background

National estimates for the numbers of babies born small for gestational age and the comorbidity with preterm birth are unavailable. We aimed to estimate the prevalence of term and preterm babies born small for gestational age (term-SGA and preterm-SGA), and the relation to low birthweight (<2500 >g), in 138 countries of low and middle income in 2010.

Methods

Small for gestational age was defined as lower than the 10th centile for fetal growth from the 1991 US national reference population. Data from 22 birth cohort studies (14 low-income and middle-income countries) and from the WHO Global Survey on Maternal …

Hospital Ships Adrift? Part 1: A Systematic Literature Review Characterizing Us Navy Hospital Ship Humanitarian And Disaster Response, 2004-2012., Derek J. Licina

Global Health Faculty Publications

Background: United States foreign policy is tied extensively to health initiatives, many related to the use of military assets. Despite substantial resource investment by the US Department of Defense (DoD) in hospital ship humanitarian assistance and disaster response missions, the impact of this investment is unclear.

Methods: A systematic literature review of both peer-reviewed and grey literature using eight databases representing the international community and multiple sectors was conducted. Data on the characteristics of missions directly related to US Navy hospital ship humanitarian assistance and disaster response from 2004-2012 were extracted and documented.

Results: Of the 1445 sources reviewed, a …

Diarrhea As A Risk Factor For Acute Lower Respiratory Tract Infections Among Young Children In Low Income Settings, Christa L. Fischer Walker, Jamie Perin, Joanne D. Katz, James M. Tielsch, Robert Black

Global Health Faculty Publications

Background

Diarrhea and acute lower respiratory tract infections (ALRI) are leading causes of morbidity and mortality among children under 5 years of age. We sought to quantify the correlation of diarrhea and respiratory infections within an individual child and to determine if infection with one illness increases the risk of infection with the other during the same time period.

Methods

We quantified the likelihood of an ALRI and a diarrhea episode occurring during the same week compared to the likelihood of each occurring independently in two cohorts of children under 3 years of age using a bivariate probit regression model. …

Latitudinal Variations In Seasonal Activity Of Influenza And Respiratory Syncytial Virus (Rsv): A Global Comparative Review, Kimberly Bloom-Feshbach, Wladimir J. Alonso, Vivek Charu, James Tamerius, Lone Simonsen, Mark A. Miller, Cecile Viboud

Global Health Faculty Publications

Background

There is limited information on influenza and respiratory syncytial virus (RSV) seasonal patterns in tropical areas, although there is renewed interest in understanding the seasonal drivers of respiratory viruses.

Methods

We review geographic variations in seasonality of laboratory-confirmed influenza and RSV epidemics in 137 global locations based on literature review and electronic sources. We assessed peak timing and epidemic duration and explored their association with geography and study settings. We fitted time series model to weekly national data available from the WHO influenza surveillance system (FluNet) to further characterize seasonal parameters.

Results

Influenza and RSV activity consistently peaked during …

Narcotics In Rheumatology, Mahsa Tehrani, Mathia Aguiar, James D. Katz

Global Health Faculty Publications

Patients with rheumatic conditions often suffer from related chronic pain. When first-line traditional medications such as acetaminophen and anti-inflammatory medications do not suffice, then other options are needed. The traditional medications may ultimately not provide sufficient pain relief, or alternatively, they can pose as a contraindication due to underlying hypertension, renal, and/or hepatic disease. Therefore, narcotics are an alluring alternative, which if used in a multidisciplinary and systematic approach to the patient, can prove to be quite beneficial in the lives of these patients.

Smoking Experimentation Among Elementary School Students In China: Influences From Peers, Families, And The School Environment, Cheng Huang, Jeffrey Koplan, Shaohua Yu, Changwei Li, Chaoran Guo, Jing Liu, Hui Li, Michelle Kegler, Pam Redmon, Michael Eriksen

Global Health Faculty Publications

The aim of this study was to investigate experimentation with smoking among primary school students in China. Data were acquired from a recent survey of 4,073 students in grades 4 to 6 (ages 9–12) in 11 primary schools of Ningbo City. The questions were adapted from the Global Youth Tobacco Survey (GYTS). Results suggest that although the Chinese Ministry of Education (MOE) encourages smoke-free schools, experimentation with cigarettes remains a serious problem among primary school students in China. Peers, family members, and the school environment play important roles in influencing smoking experimentation among students. Having a friend who smoked, seeing …

The Influence Of Climatic Conditions On The Transmission Dynamics Of The 2009 A/H1n1 Influenza Pandemic In Chile, Gerardo Chowell, Sherry Towers, Cecile Viboud, Rodrigo Fuentes, Viviana Sotomayor, Lone Simonsen, Mark A. Miller, Mauricio Lima, Claudia Villarroel, Monica Chiu, Jose E. Villarroel, Andrea Olea

Global Health Faculty Publications

No abstract provided.

Mortality Burden Of The 2009 A/H1n1 Influenza Pandemic In France: Comparison To Seasonal Influenza And The A/H3n2 Pandemic, Magali Lematire, Fabrice Carrat, Gregoire Rey, Mark A. Miller, Lone Simonsen, Cecile Viboud

Global Health Faculty Publications

Background

The mortality burden of the 2009 A/H1N1 pandemic remains unclear in many countries due to delays in reporting of death statistics. We estimate the age- and cause-specific excess mortality impact of the pandemic in France, relative to that of other countries and past epidemic and pandemic seasons.

Methods

We applied Serfling and Poisson excess mortality approaches to model weekly age- and cause-specific mortality rates from June 1969 through May 2010 in France. Indicators of influenza activity, time trends, and seasonal terms were included in the models. We also reviewed the literature for country-specific estimates of 2009 pandemic excess mortality …

Were Equatorial Regions Less Affected By The 2009 Influenza Pandemic? The Brazilian Experience, Cynthia Schuck-Paim, Cecile Viboud, Lone Simonsen, Mark A. Miller, Fernanda E.A. Moura, Roberto M. Fernandes, Marcia L. Carvalho, Wladimir J. Alonso

Global Health Faculty Publications

Although it is in the Tropics where nearly half of the world population lives and infectious disease burden is highest, little is known about the impact of influenza pandemics in this area. We investigated the mortality impact of the 2009 influenza pandemic relative to mortality rates from various outcomes in pre-pandemic years throughout a wide range of latitudes encompassing the entire tropical, and part of the subtropical, zone of the Southern Hemisphere (+5°N to −35°S) by focusing on a country with relatively uniform health care, disease surveillance, immunization and mitigation policies: Brazil. To this end, we analyzed laboratory-confirmed deaths and …

Epidemiological Characteristics And Underlying Risk Factors For Mortality During The Autumn 2009 Pandemic Wave In Mexico, Gerardo Chowell, Santiago Echevarria-Zuno, Cecile Viboud, Lone Simonsen, Mark A. Miller, Irma Fernandez-Garate, Cesar Gonzalez-Bonilla, Víctor H. Borja Aburto

Global Health Faculty Publications

Background

Elucidating the role of the underlying risk factors for severe outcomes of the 2009 A/H1N1 influenza pandemic could be crucial to define priority risk groups in resource-limited settings in future pandemics.

Methods

We use individual-level clinical data on a large series of ARI (acute respiratory infection) hospitalizations from a prospective surveillance system of the Mexican Social Security medical system to analyze clinical features at presentation, admission delays, selected comorbidities and receipt of seasonal vaccine on the risk of A/H1N1-related death. We considered ARI hospitalizations and inpatient-deaths, and recorded demographic, geographic, and medical information on individual patients during August-December, 2009. …

Environmental Drivers Of Ross River Virus In South-East Tasmania, Australia: Towards Strengthening Public Health Interventions, Angela Werner, Sarah Goater, Scott Carver, Greg Robertson, Philip Weinstein

Global Health Faculty Publications

In Australia, Ross River virus (RRV) is predominantly identified and managed through passive health surveillance. Here, the proactive use of environmental datasets to improve community-scale public health interventions in southeastern Tasmania is explored. Known environmental drivers (temperature, rainfall, tide) of the RRV vector Aedes camptorhynchus are analysed against cumulative case records for five adjacent local government areas (LGAs) from 1993 to 2009. Allowing for a 0- to 3-month lag period, temperature was the most significant driver of RRV cases at 1-month lag, contributing to a 23. 2% increase in cases above the long-term case average. The potential for RRV to …

Impact Of Antiviral Treatment And Hospital Admission Delay On Risk Of Death Associated With 2009 A/H1n1 Pandemic Influenza In Mexico, Gerardo Chowell, Cecile Viboud, Lone Simonsen, Mark A. Miller, Santiago Echevarría-Zuno, Margotx González-León, Víctor H. Borja Aburto

Global Health Faculty Publications

Background

Increasing our understanding of the factors affecting the severity of the 2009 A/H1N1 influenza pandemic in different regions of the world could lead to improved clinical practice and mitigation strategies for future influenza pandemics. Even though a number of studies have shed light into the risk factors associated with severe outcomes of 2009 A/H1N1 influenza infections in different populations (e.g., [1-5]), analyses of the determinants of mortality risk spanning multiple pandemic waves and geographic regions are scarce. Between-country differences in the mortality burden of the 2009 pandemic could be linked to differences in influenza case management, underlying population health, …

Urban Governance Of Disease, Rebecca Katz, Sangeeta Mookherji, Morgan Kaminski, Vibhuti Haté, Julie E. Fischer

Global Health Faculty Publications

Rapid population growth, urbanization, and the growing challenges faced by the urban poor require redefining the paradigm for public health interventions in the 21st century, creating new approaches that take urban determinants of health into consideration. The widening disparity between the urban poor and the urban rich further exacerbates health inequities. Existing tools for global governance of urban health risks fall short, particularly in the lack of formal mechanisms to strengthen collaboration and communication among national and municipal agencies and between their local and international non-governmental partners. There is also a clear disconnect between governance strategies crafted at the international …

Smoking Susceptibility And Its Predictors Among Adolescents In China: Evidence From Ningbo City, Cheng Huang, Jeffrey Koplan, Jing Liu, Changwei Li, Jessica Silvaggio, Amanda K. Macgurn, Tao Zhang, Michael P. Erikson, Pam Redmon

Global Health Faculty Publications

Susceptibility to smoking is a risk factor of actual adolescent smoking behaviors. This study aimed to estimate the rate of smoking susceptibility and its predictors in China with a sample of 4,695 junior high school students in Ningbo, China. Core questions from the Global Youth Tobacco Survey (GYTS) were adapted to the China context and administered to these students. The rate of smoking susceptibility, measured by “Do you foresee yourself taking up smoking in the next 12 months”, is 6.1%. Results from logistic regression suggested that among boys, adolescents’ health knowledge that smoking can cause lung cancer (OR=2.73), the belief …

How Can Health Serve As A Bridge For Peace? Certi Crisis And Transition Tool Kit, Rosalia Rodriguez-Garcia, James Macinko, F. Xavier Solorzano, Marita Schlesser, George Washington University School Of Public Health And Health Services

Global Health Faculty Publications

No abstract provided.