scholarly journals Changing Epidemiology of Acute Respiratory Infections in Under-Two Children in Dhaka, Bangladesh

2022 ◽  
Vol 9 ◽  
Author(s):  
Karine Vidal ◽  
Shamima Sultana ◽  
Alberto Prieto Patron ◽  
Irene Salvi ◽  
Maya Shevlyakova ◽  
...  
Keyword(s):  
Risk Factors ◽  
Risk Factor ◽  
Low Income ◽  
Respiratory Infections ◽  
Monsoon Season ◽  
Low Income Countries ◽  
Health Study ◽  
Acute Respiratory Infections ◽  
Respiratory Pathogens ◽  
Prevention Measures

Objectives: Risk factors for acute respiratory infections (ARIs) in community settings are not fully understood, especially in low-income countries. We examined the incidence and risk factors associated with ARIs in under-two children from the Microbiota and Health study.Methods: Children from a peri-urban area of Dhaka (Bangladesh) were followed from birth to 2 years of age by both active surveillance of ARIs and regular scheduled visits. Nasopharyngeal samples were collected during scheduled visits for detection of bacterial facultative respiratory pathogens. Information on socioeconomic, environmental, and household conditions, and mother and child characteristics were collected. A hierarchical modeling approach was used to identify proximate determinants of ARIs.Results: Of 267 infants, 87.3% experienced at least one ARI episode during the first 2 years of life. The peak incidence of ARIs was 330 infections per 100 infant-years and occurred between 2 and 4 months of age. Season was the main risk factor (rainy monsoon season, incidence rate ratio [IRR] 2.43 [1.92–3.07]; cool dry winter, IRR 2.10 [1.65–2.67] compared with hot dry summer) in the first 2 years of life. In addition, during the first 6 months of life, young maternal age (<22 years; IRR 1.34 [1.01–1.77]) and low birth weight (<2,500 g; IRR 1.39 [1.03–1.89]) were associated with higher ARI incidence.Conclusions: Reminiscent of industrialized settings, cool rainy season rather than socioeconomic and hygiene conditions was a major risk factor for ARIs in peri-urban Bangladesh. Understanding the causal links between seasonally variable factors such as temperature, humidity, crowding, diet, and ARIs will inform prevention measures.

Cardiovascular risk factors associated with migraine among the elderly with a low income: The São Paulo Ageing & Health Study (SPAH)

Cephalalgia ◽  
2010 ◽  
Vol 31 (3) ◽  
pp. 331-337 ◽  
Author(s):  
Isabela M Benseñor ◽  
Alessandra C Goulart ◽  
Paulo A Lotufo ◽  
Paulo R Menezes ◽  
Márcia Scazufca
Keyword(s):  
Risk Factors ◽  
Risk Factor ◽  
Cardiovascular Risk ◽  
Cardiovascular Risk Factor ◽  
Low Income ◽  
The Elderly ◽  
Sao Paulo ◽  
Health Study ◽  
São Paulo ◽  
Age And Sex

Background: To investigate the association between cardiovascular risk-factor profile and migraine in the elderly, we evaluated a population sample of ageing men and women (65 years or more) living in a low-income area in the city of São Paulo, Brazil. Patients and Methods: We investigated migraine status and cardiovascular profile from a baseline of 1450 participants (65–102 years of age) of the São Paulo Ageing & Health Study (SPAH), a longitudinal population-based study with low-income elderly in Brazil. The following age and sex-adjusted cardiovascular risk factors were analyzed: blood pressure, pulse pressure, serum total and high-density lipoprotein cholesterol, body mass index, smoking, history of hypertension, diabetes and the 10-year risk of myocardial infarction or coronary heart disease death based on the Framingham Risk Score. Results: The overall prevalence of migraine was 11.4%, and it was 3 times more frequent among women than men (15.3% vs 5.4%; P < 0.0001). Migraineurs were younger than non-migraineurs (mean age 70.6 years vs 72.1 years; P = 0.001, respectively). There was no statistically significant difference regarding the cardiovascular risk-factor profile after adjustment for age and sex among migraineurs and non-migraineurs. Only a decrease in the risk of hypertension among women (OR 0.58; 95% CI 0.38–0.90; P = 0.01) was also observed even after adjustment for age. Conclusions: Overall, we did not find a worse cardiovascular risk profile among elderly migraineurs. An inverse association between hypertension and migraine in women warrants further investigation.

scholarly journals A seroepidemiological study of respiratory syncytial virus infection in the Littoral Region of Cameroon

2020 ◽  
Author(s):  
Henshaw Eyambe Mandi ◽  
Solomon Abebe Yimer ◽  
Cavin Epie Bekolo ◽  
Agnes Eyoh ◽  
Sindhiya Jan ◽  
...  
Keyword(s):  
Low Income ◽  
Respiratory Infections ◽  
Venous Blood ◽  
Cross Sectional Study ◽  
Low Income Countries ◽  
Acute Respiratory Infections ◽  
Cross Sectional ◽  
Littoral Region ◽  
Rsv Infection ◽  
Syncytial Virus

Abstract BackgroundRespiratory syncytial virus (RSV) is responsible for about 300 000 deaths in young children per year, and 99% of these occur in low-income countries. This study aimed to assess the burden of RSV infection among children less than two years with acute respiratory infections (ARI) in the littoral region of Cameroon. MethodsWe carried out a cross-sectional study in seven health facilities in the littoral region of Cameroon. Venous blood was collected using serum separation tubes from eligible children who visited these healthcare facilities with acute respiratory infections. ELISA determined the seroprevalence of anti-IgM RSV. Factors associated with RSV infection were ascertained using logistic regression. ResultsOut of 100 study participants, the overall RSV-associated ARI seroprevalence was 33% (95%CI:23.6-42.3). Factors significantly associated with RSV acquisition were age below six months (p=0.000) and mixed feeding (p=0.015). ConclusionsThe RSV burden is high among children less than two years with ARI in the littoral region of Cameroon. There is a need for an effective public health RSV surveillance system with standard laboratory techniques and equipment to better understand the RSV disease age-specific incidence, seasonality, and RSV burden among patients in the communities in Cameroon.

scholarly journals Environmental Pollutants, Mucosal Barriers, and Pathogen Susceptibility; The Case for Aflatoxin B1 as a Risk Factor for HIV Transmission and Pathogenesis

Pathogens ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 1229
Author(s):  
Erin P. Madeen ◽  
Frank Maldarelli ◽  
John D. Groopman
Keyword(s):  
Risk Factors ◽  
Risk Factor ◽  
Low Income ◽  
Aflatoxin B1 ◽  
Hiv Transmission ◽  
Transmission Risk ◽  
Low Income Countries ◽  
Mucosal Barrier ◽  
Hiv Viral Load ◽  
Cytokine Activation

HIV transmission risk is dependent on the infectivity of the HIV+ partner and personal susceptibility risk factors of the HIV− partner. The mucosal barrier, as the internal gatekeeper between environment and self, concentrates and modulates the internalization of ingested pathogens and pollutants. In this review, we summarize the localized effects of HIV and dietary toxin aflatoxin B1 (AFB1), a common pollutant in high HIV burden regions, e.g., at the mucosal barrier, and evidence for pollutant-viral interactions. We compiled literature on HIV and AFB1 geographic occurrences, mechanisms of action, related co-exposures, personal risk factors, and HIV key determinants of health. AFB1 exposure and HIV sexual transmission hotspots geographically co-localize in many low-income countries. AFB1 distributes to sexual mucosal tissues generating inflammation, microbiome changes and a reduction of mucosal barrier integrity, effects that are risk factors for increasing HIV susceptibility. AFB1 exposure has a positive correlation to HIV viral load, a risk factor for increasing the infectivity of the HIV+ partner. The AFB1 exposure and metabolism generates inflammation that recruits HIV susceptible cells and generates chemokine/cytokine activation in tissues exposed to HIV. Although circumstantial, the available evidence makes a compelling case for studies of AFB1 exposure as a risk factor for HIV transmission, and a modifiable new component for combination HIV prevention efforts.

Epidemiology and global burden of hypertension

ESC CardioMed ◽  
2018 ◽  
pp. 290-297
Author(s):  
George A. Mensah
Keyword(s):  
Risk Factors ◽  
Blood Pressure ◽  
Risk Factor ◽  
Systolic Blood Pressure ◽  
Low Income ◽  
Population Based ◽  
Pooled Analysis ◽  
Low Income Countries ◽  
Preventable Risk Factor ◽  
Sub Saharan

Hypertension is the most powerful, independent, preventable risk factor for death and disability from cardiovascular diseases. It is also a leading risk factor for all-cause mortality and the largest contributor to global disability-adjusted life years (DALYs). In 2015, exposure to high systolic blood pressure (BP) accounted for 10.7 million deaths (33.2% of deaths attributed to all risk factors) and nearly 212 million DALYs or 20.9% of DALYs from all risk factors. Epidemiological research over the past half-century has confirmed that the risk from hypertension is strong, continuous, graded, and doubles for each increment of 20 mmHg systolic blood pressure (BP) or 10 mmHg diastolic BP in adults, without evidence of a threshold down to BPs as low as 115/75 mmHg. In children and adolescents, hypertension prevalence is increasing (in concert with the continuing epidemic of obesity) and raised BP in adolescents remains the strongest predictor of hypertension in adults. Over the last 25 years, the global age-standardized summary exposure to hypertension has increased for men but not for women. A pooled analysis of 1479 population-based measurements covering more than 19 million participants over four decades showed that the number of adults with hypertension increased from 594 million in 1975 to 1.13 billion in 2015. Most of the increase occurred in low- and middle-income countries. Globally, the highest BP levels have shifted from high-income countries to low-income countries in south Asia and sub-Saharan Africa while BP levels have remained persistently high in central and eastern Europe.

scholarly journals The Influence of FUT2 and FUT3 Polymorphisms and Nasopharyngeal Microbiome on Respiratory Infections in Breastfed Bangladeshi Infants from the Microbiota and Health Study

mSphere ◽  
2021 ◽  
Author(s):  
Aristea Binia ◽  
Léa Siegwald ◽  
Shamima Sultana ◽  
Maya Shevlyakova ◽  
Gregory Lefebvre ◽  
...  
Keyword(s):  
Human Milk ◽  
Risk Reduction ◽  
Respiratory Infections ◽  
Health Study ◽  
Acute Respiratory Infections ◽  
Respiratory Pathogens ◽  
Protective Effects ◽  
Human Milk Oligosaccharides ◽  
Milk Oligosaccharides

The observed risk reduction of acute respiratory infections (ARIs) among infants of secretor mothers during the predominant breastfeeding period is consistent with the hypothesis that fucosylated oligosaccharides in human milk contribute to protection against respiratory infections. Respiratory pathogens were only weak modulators of risk, and the nasopharyngeal microbiome did not influence ARI risk, suggesting that the associated protective effects of human milk oligosaccharides (HMOs) are not conveyed via changes in the nasopharyngeal microbiome.

A Cross-sectional Study of the Clinical Profile of Children With Cerebral Palsy in Benin, a West African Low-Income Country

2019 ◽  
Vol 34 (13) ◽  
pp. 842-850
Author(s):  
Emmanuel Segnon Sogbossi ◽  
Damienne Houekpetodji ◽  
Toussaint G. Kpadonou ◽  
Yannick Bleyenheuft
Keyword(s):  
Risk Factors ◽  
Cerebral Palsy ◽  
Low Income ◽  
Classification System ◽  
West African ◽  
Low Income Countries ◽  
Cross Sectional ◽  
Common Cause ◽  
Low Income Country ◽  
Children With Cerebral Palsy

Cerebral palsy is a common cause of pediatric motor disability. Although there are increasing amounts of data on the clinical profile of children with cerebral palsy in high-income countries, corresponding information about low-income countries and developing countries is lacking. Therefore, we aimed to describe the clinical spectrum of cerebral palsy in children in Benin, a representative West African low-income country. Our cross-sectional observational study included 114 children with cerebral palsy recruited from community-based rehabilitation centers and teaching hospitals (median age: 7 years, range 2-17; sex: 66% male). Data were collected through review of medical records and interviews with children’s mothers. Assessment included risk factors, clinical subtypes according to the Surveillance of CP in Europe criteria, severity of motor outcome scored by the Gross Motor Function Classification System (GMFCS) and Manual Ability Classification System, comorbidities, and school attendance. We recorded a high prevalence of intrapartum adverse events. Seventeen percent of children had postneonatal cerebral palsy, with cerebral malaria being the most common cause. Most children were severely affected (67.5% as bilateral spastic; 54.4% as GMFCS IV or V), but severity declined substantially with age. Only 23% of the children with cerebral palsy had attended school. Poor motor outcomes and comorbidities were associated with school nonattendance. These results suggest that intrapartum risk factors and postnatal cerebral malaria in infants are opportune targets for prevention of cerebral palsy in Sub-Saharan low-income countries.

scholarly journals Risk Factors for Acute Respiratory Infections (ARI) Among Under-five Children in Bangladesh

2008 ◽  
Vol 1 (1) ◽  
pp. 72-81 ◽  
Author(s):  
Kazi Md. Abul Kalam Azad
Keyword(s):  
Risk Factors ◽  
Vitamin A ◽  
Adolescent Mothers ◽  
Home Visiting ◽  
Respiratory Infections ◽  
Vitamin A Deficiency ◽  
Significant Risk ◽  
Childhood Mortality ◽  
Acute Respiratory Infections ◽  
Mortality And Morbidity

Acute respiratory infection (ARI) is a major cause of childhood mortality and morbidity in Bangladesh. The aim of this study is to identify the significant risk factors for ARI in children less than five years of age. The data in this study comes from Bangladesh Demographic and Health Survey (BDHS) 2004. In this study, a child was considered as having experienced ARI if she or he had cough in the last two weeks preceding the survey with any one of the three symptoms of short but rapid breathing, difficulty of breathing or labored inspiration. Logistic regression was used on various independent variables to find the risk factors. Results showed that child's age, sex, body weight and Vitamin A deficiency were correlated with prevalence of ARI. Additionally mother's characteristics like age, malnutrition, education level, and family's socio-economic status were found to be associated. Recommendations include more specific knowledge of ARI to adolescent mothers from the lowest wealth quintile. A community service which could include home visiting for health education, supplementation of vitamin A, and advice would be an advantage if provided for poor or teenaged pregnant women. This in turn would reduce low birth weight incidence, and subsequently reduce incidence of ARI among these children.Keywords: Acute respiratory infections (ARI); Risk factors; Infant; Child under 5 years; Bangladesh.© 2009 JSR Publications. ISSN: 2070-0237(Print); 2037-0245 (Online). All rights reserved.DOI: 10.3329/jsr.v1i1.1055

scholarly journals Epidemiology of Respiratory Pathogens among Elderly Nursing Home Residents with Acute Respiratory Infections in Corsica, France, 2013–2017

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Shirley Masse ◽  
Lisandru Capai ◽  
Alessandra Falchi
Keyword(s):  
Nursing Home ◽  
Influenza A ◽  
Respiratory Infections ◽  
Nursing Home Residents ◽  
Respiratory Viruses ◽  
Sudden Onset ◽  
Influenza Viruses ◽  
Influenza B ◽  
Acute Respiratory Infections ◽  
Respiratory Pathogens

Background. The current study aims to describe the demographical and clinical characteristics of elderly nursing home (NH) residents with acute respiratory infections (ARIs) during four winter seasons (2013/2014–2016/2017), as well as the microbiological etiology of these infections. Methods. Seventeen NHs with at least one ARI resident in Corsica, France, were included. An ARI resident was defined as a resident developing a sudden onset of any constitutional symptoms in addition to any respiratory signs. Nasopharyngeal swabs from ARI residents were screened for the presence of 21 respiratory agents, including seasonal influenza viruses. Results. Of the 107 ARI residents enrolled from NHs, 61 (57%) were positive for at least one of the 21 respiratory pathogens. Forty-one (38.3%) of the 107 ARI residents had influenza: 38 (92%) were positive for influenza A (100% A(H3N2)) and three (8%) for influenza B/Victoria. Axillary fever (≥38°C) was significantly more common among patients infected with influenza A(H3N2). Conclusion. The circulation of seasonal respiratory viruses other than influenza A(H3N2) seems to be sporadic among elderly NH residents. Investigating the circulation of respiratory viruses in nonwinter seasons seems to be important in order to understand better the dynamic of their year-round circulation in NHs.

scholarly journals Disparity in Risk Factor Severity for Early Childhood Blood Lead among Predominantly African-American Black Children: The 1999 to 2010 US NHANES

2020 ◽  
Vol 17 (5) ◽  
pp. 1552 ◽  
Author(s):  
Deniz Yeter ◽  
Ellen C. Banks ◽  
Michael Aschner
Keyword(s):  
Risk Factors ◽  
Early Childhood ◽  
African American ◽  
Risk Factor ◽  
Low Income ◽  
Racial Disparity ◽  
Blood Lead ◽  
Black Children ◽  
The United States ◽  
American Black

There is no safe detectable level of lead (Pb) in the blood of young children. In the United States, predominantly African-American Black children are exposed to more Pb and present with the highest mean blood lead levels (BLLs). However, racial disparity has not been fully examined within risk factors for early childhood Pb exposure. Therefore, we conducted secondary analysis of blood Pb determinations for 2841 US children at ages 1–5 years with citizenship examined by the cross-sectional 1999 to 2010 National Health and Nutrition Examination Survey (NHANES). The primary measures were racial disparities for continuous BLLs or an elevated BLL (EBLL) ≥5 µg/dL in selected risk factors between non-Hispanic Black children (n = 608) and both non-Hispanic White (n = 1208) or Hispanic (n = 1025) children. Selected risk factors included indoor household smoking, low income or poverty, older housing built before 1978 or 1950, low primary guardian education <12th grade/general education diploma (GED), or younger age between 1 and 3 years. Data were analyzed using a regression model corrected for risk factors and other confounding variables. Overall, Black children had an adjusted +0.83 µg/dL blood Pb (95% CI 0.65 to 1.00, p < 0.001) and a 2.8 times higher odds of having an EBLL ≥5 µg/dL (95% CI 1.9 to 3.9, p < 0.001). When stratified by risk factor group, Black children had an adjusted 0.73 to 1.41 µg/dL more blood Pb (p < 0.001 respectively) and a 1.8 to 5.6 times higher odds of having an EBLL ≥5 µg/dL (p ≤ 0.05 respectively) for every selected risk factor that was tested. For Black children nationwide, one in four residing in pre-1950 housing and one in six living in poverty presented with an EBLL ≥5 µg/dL. In conclusion, significant nationwide racial disparity in blood Pb outcomes persist for predominantly African-American Black children even after correcting for risk factors and other variables. This racial disparity further persists within housing, socio-economic, and age-related risk factors of blood Pb outcomes that are much more severe for Black children.

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