scholarly journals Knowledge of blood-borne transmission risk is inversely associated with HIV infection in sub-Saharan Africa

2011 ◽  
Vol 5 (03) ◽  
pp. 182-198 ◽  
Author(s):  
Devon D. Brewer

Introduction: Accurate, comprehensive knowledge of an infectious pathogen's modes of transmission helps people to avoid infection. Growing evidence suggests that blood-borne HIV transmission is widespread in sub-Saharan Africa. Methodology: I examined the association between knowledge of blood-borne HIV risk and prevalent HIV infection in Demographic and Health Survey data from 16 sub-Saharan African countries. I also searched three online databases for evidence of public education campaigns focused on blood-borne HIV risks in these countries. Results: Knowledge was moderately to strongly inversely related to HIV prevalence at the national level (i.e., countries in which many respondents were aware of blood-borne risk had lower HIV prevalence than countries in which few respondents were aware of such risk). At the individual level, respondents who knew about blood-borne HIV risks were modestly less likely to be infected than those who did not show awareness of this risk, independent of demographic and sexual behavior variables. This relationship was stronger in southern Africa than in west, central, and east Africa. In parallel analyses, knowledge of condom use as a way to prevent HIV was positively associated with prevalent HIV infection at both the national and individual levels. West, central, and east African countries with low to moderate HIV prevalence had implemented public education campaigns that included a focus on blood-borne transmission risks. Such campaigns were absent from high prevalence countries in southern Africa. Conclusion: These findings suggest that knowledge of blood-borne HIV risk protects against HIV infection and that public education campaigns are important for spreading that knowledge. 

2012 ◽  
Vol 23 (7) ◽  
pp. 490-496 ◽  
Author(s):  
E Freeman ◽  
P Anglewicz

Research on HIV infection and sexual behaviour in sub-Saharan Africa typically focuses on individuals aged 15–49 years under the assumption that both become less relevant for older individuals. We test this assumption using data from rural Malawi to compare sexual behaviour and HIV infection for individuals aged 15–49 with individuals aged 50–64 and 65 and over years. Although general declines with age were observed, levels of sexual activity and HIV remained considerable: 26.7% and 73.8% of women and men aged 65+ reported having sex in the last year, respectively; men's average number of sexual partners remained above one; and HIV prevalence is significantly higher for men aged 50–64 (8.9%) than men aged 15–49 (4.1 %). We conclude that older populations are relevant to studies of sexual behaviour and HIV risk. Their importance is likely to increase as access to antiretrovirals in Africa increases. We recommend inclusion of adults aged over 49 years in African HIV/AIDS research and prevention efforts.


2020 ◽  
Author(s):  
Reka Maulide Cane ◽  
Dessalegn Melesse ◽  
Nkomba Kayeyi ◽  
Abubakar Manu ◽  
Yohannes Dibaba Wado ◽  
...  

Abstract Background In sub-Saharan Africa HIV transmission is a major challenge in adolescents, especially among girls and those living in urban settings. Major international efforts have aimed at reducing sexual transmission. This analysis aims to assess the trends in HIV prevalence by gender in adolescents, as well as urban-rural disparities. Methods HIV prevalence data were obtained for 30 countries with a national survey since 2010 and for 23 countries with one survey circa 2005 and a recent survey circa 2015. Countries were grouped into 2% or higher and lower than 2% HIV prevalence among girls 15–19 years in the first survey. Country medians and average annual rates of changes were used to summarize the trends. Data on HIV incidence at ages 15–24 and prevalence at 5–9 and 10–14 years were reviewed from 11 recent national surveys. Trends in urban-rural disparities in HIV prevalence and selected indicators of sexual and HIV testing behaviours were assessed for females and males 15–24 years, using the same surveys. Results HIV prevalence among girls 15–19 years declined in the higher HIV prevalence group from 5.7–2.6% during 2005–2015, corresponding with an average annual rate of reduction of 6.5% per year. Among boys, the median HIV prevalence declined from 2.1–1.2% in the higher prevalence group. Smaller changes were observed in the lower prevalence country group where median HIV prevalence among girls decreased from 0.7–0.4% (average annual rate of reduction 5.9%). Girl – boy differences at 10–14 years were small with a country median HIV of 1.0% and 1.3%, respectively. Urban females and males 15–24 had at least 1.5 times higher HIV prevalence than their rural counterparts, and all experienced similar declines during 2005–2015. Condom use and HIV testing increased among adolescents in both higher and lower prevalence countries, but indicators of sexual activity showed little change over time. Conclusions HIV prevalence declined in almost all countries during the last decade, in both urban and rural settings, for both sexes. The urban-rural gap persisted and HIV transmission to girls, but not boys, is still a major challenge in eastern and southern African countries.


1984 ◽  
Vol 40 (2) ◽  
pp. 185-197
Author(s):  
Vanita Ray

The past decade has witnessed a staggering increase in the number of refugees in Africa; from 1.5 millions in 1969, their numbers have today risen to more than 5 million—that is, of the 10 mlliion refugees in the world, 5 millions are African. Even more alarming is the fact that the number of refugees in Africa is now greater than the populations of very many African countries. They criss-cross the entire continent and there is not a single country in Africa which has not been affected by the refugee problem. And always behind the flight of these peoples is the spectre of injustice and strife, of racial persecution or civil war—all violations of human rights. The first major group of African refugees arose as a result of national liberation struggles; thousands were dispersed to the neighbouring countries. While the National Liberation Front of Algeria (FLN) fought for the country's independence (beginning 1956), many women and children waited in refugee camps in Tunisia and Morocco. Thereafter, fortunately, most of sub-Saharan Africa obtained independence peacefully, but as the waves of independence struck the strongholds of settler and white dominated southern Africa, the travails of refugees emerged once more. Massive movements of people accompanied the strife in Angola, Mozambique, as well as Guinea Bissau. Thereafter, there was a stream of refugees from South Africa, Namibia and Zimbabwe. Meanwhile, because of internal conflicts, Africa was having its own refugee problems. Some of the most serious ones arose out of the inter-ethnic clashes in Burundi and Rwanda, with the Tutsi fleeing Rwanda and the Hutu escaping Burundi. Then the civil war in Zaire (formerly Belgian Congo) occurred in different places at different times (1960–65 and then again in March 1977–78), and has still not completely subsided. Similar is the case of Chad; the civil war in the country, which has recurred time and again, has sent large numbers of refugees fleeing to the Cameroons. Again the 20 year civil war in Sudan caused much of its southern population to scatter to the surrounding countries and as they were returning home, Sudan started receiving Ethiopian refugees from 1967—first from Eritrea, then other parts of Ethiopia. The warfare in Ogaden, the defeat of the Somalia Army by Soviet-armed and Cuban-reinforced. Ethiopian forces in 1977–78, left Ethiopia, Somalia and Djibouti with large displaced populations. Large sections of the populations of Guinea, Equatorial Guinea and Uganda were forced to seek exile because of harsh rule in their countries. New waves of refugees—millions of men, women and children—came out from Nigeria following the civil war in that country. Finally, the other important category of refugee that the continent cannot ignore are the “economic” refugees—people who leave their home simply because they cannot eke out a living or are escaping starvation due to the recent droughts. This last category usually pass unnoticed as long as the host countries accept them. Nevertheless, when sent back to their own countries, as Ghana and Uganda did and most other countries would ultimately do, they have difficult problems of integration. Keeping in mind this conceptual heterogeneity of the refugees in Africa, an attempt is made to analyze three types of problems and their combinations which cause refugee migrations in sub-Saharan Africa. For this purpose, sub-Saharan Africa may be divided into three parts—Southern Africa, that is the frontline states; Tropical Black Africa and states neighbouring the Sahara. For further analysis, the cause for which people seek refuge may be characterized as: 1. Domestic instability arising out of tribal issue conflicts and apartheid; 2. Border clashes, again resulting out of tribal rivaries and apartheid; 3. Foreign intervention towards preserving domestic clientele.


10.2196/18747 ◽  
2020 ◽  
Vol 22 (8) ◽  
pp. e18747
Author(s):  
Amaury Thiabaud ◽  
Isotta Triulzi ◽  
Erol Orel ◽  
Kali Tal ◽  
Olivia Keiser

Background Demographic and sociobehavioral factors are strong drivers of HIV infection rates in sub-Saharan Africa. These factors are often studied in qualitative research but ignored in quantitative analyses. However, they provide in-depth insight into the local behavior and may help to improve HIV prevention. Objective To obtain a comprehensive overview of the sociobehavioral factors influencing HIV prevalence and incidence in Malawi, we systematically reviewed the literature using a newly programmed tool for automatizing part of the systematic review process. Methods Due to the choice of broad search terms (“HIV AND Malawi”), our preliminary search revealed many thousands of articles. We, therefore, developed a Python tool to automatically extract, process, and categorize open-access articles published from January 1, 1987 to October 1, 2019 in the PubMed, PubMed Central, JSTOR, Paperity, and arXiV databases. We then used a topic modelling algorithm to classify and identify publications of interest. Results Our tool extracted 22,709 unique articles; 16,942 could be further processed. After topic modelling, 519 of these were clustered into relevant topics, of which 20 were kept after manual screening. We retrieved 7 more publications after examining the references so that 27 publications were finally included in the review. Reducing the 16,942 articles to 519 potentially relevant articles using the software took 5 days. Several factors contributing to the risk of HIV infection were identified, including religion, gender and relationship dynamics, beliefs, and sociobehavioral attitudes. Conclusions Our software does not replace traditional systematic reviews, but it returns useful results to broad queries of open-access literature in under a week, without a priori knowledge. This produces a “seed dataset” of relevance that could be further developed. It identified known factors and factors that may be specific to Malawi. In the future, we aim to expand the tool by adding more social science databases and applying it to other sub-Saharan African countries.


2004 ◽  
Vol 37 (1) ◽  
pp. 1-36 ◽  
Author(s):  
JANET MAIA WOJCICKI

This is a critical, systematic review of the relationship between socioeconomic status (SES) and HIV infection in women in Southern, Central and Eastern Africa. In light of the interest in micro-credit programmes and other HIV prevention interventions structured to empower women through increasing women’s access to funds and education, this review examines the epidemiological and public health literature, which ascertains the association between low SES using different measurements of SES and risk of HIV infection in women. Also, given the focus on structural violence and poverty as factors driving the HIV epidemic at a structural/ecological level, as advocated by Paul Farmer and others, this study examines the extent to which differences in SES between individuals in areas with generalized poverty affect risk for SES. Out of 71 studies retrieved, 36 studies met the inclusion criteria including 30 cross-sectional, one case-control and five prospective cohort or nested case-control studies. Thirty-five studies used at least one measurement of female’s SES and fourteen also included a measurement of partner’s SES. Studies used variables measuring educational level, household income and occupation or employment status at the individual and neighbourhood level to ascertain SES. Of the 36 studies, fifteen found no association between SES and HIV infection, twelve found an association between high SES and HIV infection, eight found an association between low SES and HIV infection and one was mixed. In interpreting these results, this review examines the role of potential confounders and effect modifiers such as history of STDs, number of partners, living in urban or rural areas and time and location of study in sub-Saharan Africa. It is argued that STDs and number of partners are on the causal pathway under investigation between HIV and SES and should not be adjusted as confounders in any analysis. In conclusion, it is argued that in low-income sub-Saharan Africans countries, where poverty is widespread, increasing access to resources for women may initially increase risk of HIV or have no effect on risk-taking behaviours. In some parts of Southern Africa where per capita income is higher and within-country inequalities in wealth are greater, studies suggest that increasing SES may decrease risk. This review concludes that increased SES may have differential effects on married and unmarried women and further studies should use multiple measures of SES. Lastly, it is suggested that the partner’s SES (measured by education or income/employment) may be a stronger predictor of female HIV serostatus than measures of female SES.


F1000Research ◽  
2018 ◽  
Vol 7 ◽  
pp. 1879 ◽  
Author(s):  
Chris R. Kenyon ◽  
Jozefien Buyze ◽  
Ilan S. Schwartz

Background: It is unclear why HIV prevalence varies by nearly two orders of magnitude between regions within countries in sub-Saharan Africa. In this ecological study, we assess if HIV prevalence by region is associated with any of four markers of higher risk sexual behavior: lifetime number of partners, multiple partners in past year, higher risk sex (defined as sex with non-cohabiting, non-marital partners) and age at debut. Methods: We performed Pearson’s correlation between the 4 behavioral risk factors and HIV prevalence by region in 47 nationally representative surveys from 27 sub-Saharan African countries, separately by gender. In addition, principal components analysis was used to reduce the eight risk factors (four for each gender) to two principal components (PCs). Mixed effects linear regression was used to assess the relationship between the resulting two PCs and HIV prevalence after controlling for the prevalence of male circumcision. Results: HIV prevalence varied by a median 3.7 fold (IQR 2.9-7.9) between regions within countries. HIV prevalence was strongly associated with higher risk sex and, to a lesser extent, the other risk factors evaluated. Both PCs were strongly associated with HIV prevalence when assessed via linear regression. Conclusions: Differences in sexual behavior may underpin the large differences in HIV-prevalence between subpopulation within sub-Saharan African countries.


2020 ◽  
Vol 20 (07) ◽  
Author(s):  
Mindaugas Leika ◽  
Hector Perez-Saiz ◽  
Olga Ilinichna Stankova ◽  
Torsten Wezel

The paper finds that supervisory stress tests are conducted in more than half of sub-Saharan African countries, particularly in western and southern Africa, and that the number of individual stress tests has grown exponentially since the early 2010s. By contrast, few central banks publish assessments of macro-financial linkages; the focus leans more toward discussing trends and weaknesses within the financial sector than on outside risks that may negatively affect its performance.


2003 ◽  
Vol 14 (3) ◽  
pp. 193-196 ◽  
Author(s):  
M R Joesoef ◽  
B Cheluget ◽  
L H Marum ◽  
C Wandera ◽  
C A Ryan ◽  
...  

Several studies in sub-Saharan Africa have reported that HIV prevalence in young women is higher than in young men. We used data from Kenya HIV sentinel surveillance conducted from 1990 to 2001 among sexually transmitted disease (STD) patients (15-49 years old) to investigate consistency of gender differentials over time and their risk factors. Of the 15,889 STD patients, the HIV prevalence ranged from 16.0% in 1990 to 41.8% in 1997. The odds ratios (ORs) of HIV infection for women compared to men decreased by age; women 15-24 years were nearly twice as likely as men of the same ages to be HIV infected (OR 1.7 [1.5-2.0]), but risk in those >44 years was almost equal (OR 0.8 [95% CI 0.7-1.2]). The odds of HIV infection for women compared to men were twice in unmarried patients (OR 2.1 [95% CI 1.8-2.3]). This association persisted after controlling for age groups or marital status, residence, level of education, and presence of STD syndromes. This pattern had been consistent over 12 years. Adolescent women with symptoms of STDs should be a focus for the HIV/STD intervention programmes because of their high risk for HIV.


2013 ◽  
Vol 46 (4) ◽  
pp. 431-448 ◽  
Author(s):  
JOYCE N. MUMAH ◽  
DOUGLAS JACKSON-SMITH

SummaryOne of the most consistent findings in social epidemiology is an inverse relationship between indicators of SES and most types of illness. However, a growing body of research on HIV in sub-Saharan Africa suggests an intriguing reversal of this pattern, particularly with respect to HIV among women. In Cameroon, specifically, high-SES women have higher rates of HIV infection compared with low-SES women. Using data from the 2004 Cameroon DHS, this study explored the relationships between SES and HIV and tested a multivariate model designed to highlight the distinctive factors associated with increased risk of HIV among women in different SES classes. The results revealed that high-SES women who reported engaging in riskier sexual behaviour had the highest levels of HIV infection. Surprisingly, among this group increased knowledge of HIV, more domestic decision-making authority and access to health care did not reduce vulnerability. Meanwhile, among low-SES women relative gender inequality was significantly related to HIV risk. Specifically, among this group of women, having a partner with higher education was strongly associated with greater HIV risk. The results suggest that different approaches targeting each sub-group are needed to effectively combat the disease.


2013 ◽  
Vol 45 (6) ◽  
pp. 853-862 ◽  
Author(s):  
PAUL HENRY BRODISH

SummaryThis paper investigates whether ethnic diversity at the Demographic and Health Surveys (DHS) cluster level predicts HIV serostatus in three sub-Saharan African countries (Kenya, Malawi and Zambia), using DHS household survey and HIV biomarker data for men and women aged 15–59 collected since 2006. The analysis relates a binary dependent variable (HIV positive serostatus) and a weighted aggregate predictor variable representing the number of different ethnic groups within a DHS Statistical Enumeration Area (SEA) or cluster, which roughly corresponds to a neighbourhood. Multilevel logistic regression is used to predict HIV prevalence within each SEA, controlling for known demographic, social and behavioural predictors of HIV serostatus. The key finding was that the cluster-level ethnic diversity measure was a significant predictor of HIV serostatus in Malawi and Zambia but not in Kenya. Additional results reflected the heterogeneity of the epidemics: male gender, marriage (Kenya), number of extramarital partners in the past year (Kenya and Malawi, but probably confounded with younger age) and Muslim religion (Zambia) were associated with lower odds of positive HIV serostatus. Condom use at last intercourse (a spurious result probably reflecting endogeneity), STD in the past year, number of lifetime sexual partners, age (Malawi and Zambia), education (Zambia), urban residence (Malawi and Zambia) and employment (Kenya and Malawi) were associated with higher odds of positive serostatus. Future studies might continue to employ multilevel models and incorporate additional, more robust, controls for individual behavioural risk factors and for higher-level social and economic factors, in order to verify and further clarify the association between neighbourhood ethnic diversity and HIV serostatus.


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