scholarly journals Modeling the Transmission Dynamics of HIV/AIDS epidemics: an introduction and a review.

2010 ◽  
Vol 4 (10) ◽  
pp. 597-608 ◽  
Author(s):  
Onoja Matthew Akpa ◽  
Benjamin Agboola Oyejola

Introduction: One of the greatest causes of morbidity and mortality in the Sub-Saharan Africa, particularly among young adults, is HIV/AIDS. Many mathematical models have been suggested for describing the epidemiology as well as the epidemiological consequences of the epidemic. A review of some these models would aid researchers in applying them to better understand and control the incidence and distribution of the disease in their countries. Methodology: This study reviews some of the models proposed by various authors for describing the epidemiology as well as the epidemiological consequences of the HIV/AIDS epidemic and how some of them could be modified to suit the situations in other countries. We also discuss the limitations and the place of such models in the fight against the HIV epidemic. Results: A clear explanation of the premises and assumptions on which the models were based was reached by reviewing the models across different scenarios. Conclusion: Mathematical models have been very useful in HIV research, particularly for empirical studies on people living with HIV/AIDS (PLWHA). These models make predictions that generate questions of social and ethical interest.

2019 ◽  
Vol 5 (2) ◽  
pp. 197-204
Author(s):  
Israel Oluwasegun Ayenigbara

Human immunodeficiency virus (HIV) is an infection that came into existence decades back; it spread across the African countries in the late 1970s, and is currently endemic across the world. HIV is a major public health problem all over the world, as it has claimed more than 35million lives. There were around 36.9 million individuals living with HIV at the end of 2017, and Sub-Saharan Africa remains the most affected by HIV infection with 1 in 25 adults (4.1%) living with the virus, accounting for 70% of the people living with HIV worldwide. Unfortunately, Sub-Saharan Africa continues to be the continent with the highest cases of infections and deaths from HIV/AIDS even after the implementation of various HIV/AIDS prevention methods. Fortunately, pre-exposure prophylaxis (PrEP) offers the world a novel way of curtailing the HIV/AIDS epidemic, as PrEP is highly effective for preventing HIV if it is used as prescribed. This paper discusses the urgent need for the use of PrEP in the prevention of HIV/AIDS in Sub-Saharan Africa. It is a review paper in which the meaning of PrEP was discussed, people who need PrEP were identified, the rationale for the use of PrEP for the prevention of HIV/AIDS in Sub-Saharan Africa were highlighted, and probable obstacles to the successful implementation of PrEP for the prevention of HIV/AIDS in Sub-Saharan Africa were also identified. It was concluded that to achieve the 90-90-90 goals set by UNAIDS to help end the AIDS epidemic in the world, PrEP offers a new and novel way for HIV prevention, and its implementation across all African countries is urgently needed for the prevention of HIV/AIDS in Sub-Saharan Africa.


Author(s):  
Massimo Leone ◽  
Fausto Ciccacci ◽  
Stefano Orlando ◽  
Sandro Petrolati ◽  
Giovanni Guidotti ◽  
...  

Eighty percent of people with stroke live in low- to middle-income nations, particularly in sub-Saharan Africa (SSA) where stroke has increased by more than 100% in the last decades. More than one-third of all epilepsy−related deaths occur in SSA. HIV infection is a risk factor for neurological disorders, including stroke and epilepsy. The vast majority of the 38 million people living with HIV/AIDS are in SSA, and the burden of neurological disorders in SSA parallels that of HIV/AIDS. Local healthcare systems are weak. Many standalone HIV health centres have become a platform with combined treatment for both HIV and noncommunicable diseases (NCDs), as advised by the United Nations. The COVID-19 pandemic is overwhelming the fragile health systems in SSA, and it is feared it will provoke an upsurge of excess deaths due to the disruption of care for chronic diseases such as HIV, TB, hypertension, diabetes, and cerebrovascular disorders. Disease Relief through Excellent and Advanced Means (DREAM) is a health programme active since 2002 to prevent and treat HIV/AIDS and related disorders in 10 SSA countries. DREAM is scaling up management of NCDs, including neurologic disorders such as stroke and epilepsy. We described challenges and solutions to address disruption and excess deaths from these diseases during the ongoing COVID-19 pandemic.


2017 ◽  
Vol 11 (1) ◽  
pp. 67-75 ◽  
Author(s):  
Idongesit Godwin Utuk ◽  
Kayode Omoniyi Osungbade ◽  
Taiwo Akinyode Obembe ◽  
David Ayobami Adewole ◽  
Victoria Oluwabunmi Oladoyin

Background:Despite demonstrating global concerns about infection in the workplace, very little research has explored how co-workers react to those living with HIV in the workplace in sub-Saharan Africa. This study aimed to assess the level of stigmatising attitude towards co-workers living with HIV in the workplace.Methods:The study was a descriptive cross-sectional survey involving 403 respondents. They were recruited from selected companies through a multistage sampling technique. Survey was carried out using pre-tested semi-structured questionnaires. Data were analyzed using the Statistical Package for the Social Sciences to generate frequencies, cross tabulations of variables at 5% level of significance. Logistic regression model was used to determine the predictors at 95% confidence intervals.Results:Mean age of respondents was 32.9 ± 9.4 years with 86.1% being females. Overall, slightly below two-third (63.0%) had good knowledge on transmission of HIV/AIDS while 218 (54.1%) respondents had a high stigmatising attitude towards co-workers with HIV in the workplace. More female respondents (69.6%) demonstrated high stigmatising attitudes towards co-workers with HIV in the workplace (p = 0.012). Female workers were twice more likely to have high stigmatising attitudes towards co-worker with HIV [OR 2.1 (95% CI: 1.13 – 3.83)].Conclusion:Stigma towards people living with HIV/AIDs is still very persistent in different settings. Good knowledge amongst our participants about HIV/AIDs did not translate to low stigmatising attitudes among workers. Concerted efforts and trainings on the transmission of HIV/AIDs are essential to reduce stigma that is still very prevalent in workplace settings.


Author(s):  
Tafadzwa Dzinamarira ◽  
Moreblessing Chipo Mashora

Background: Good nutritional status is highly significant for individuals who are infected with HIV. However, they still face a number of nutritional challenges. The proposed scoping review will map literature on the nutritional challenges facing people living with HIV/AIDS (PLWH) and guide future research in nutritional management to improve health outcomes for PLWH. Here we outline a scoping review protocol designed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analysis Protocols (PRISMA-P 2015 Guidelines).Methods: The Arksey and O’Malley’s 2005 scoping methodological framework further improved by Levac et al. 2010 will guide the search and reporting. Searches will be conducted for eligible articles from MEDLINE (PubMed), MEDLINE, CINAHL, Academic Search Complete and ISI Web of Science (Science Citation Index) electronic databases. Two independent reviewers will conduct the search guided by an inclusion and exclusion criteria. Quality appraisal of the included articles will be conducted guided by the mixed methods appraisal tool 2018 version. We will employ NVivo version 12 for thematic content analysis.Conclusions: The findings of this review will guide future research in nutritional management to improve health outcomes for PLWH in sub-Saharan African. This review will be disseminated electronically in a published peer reviewed article and in print.


2013 ◽  
Vol 8 (1) ◽  
pp. 45
Author(s):  
Tri Rini Puji Lestari

Secara nasional, Indonesia telah mengantisipasi epidemi HIV/AIDS, tetapi jumlah kasus HIV/AIDS di Provinsi Bali dari tahun ke tahun memperlihatkan peningkatan yang semakin mengkhawatirkan. Penelitian ini bertujuan untuk mengetahui perkembangan jumlah kasus dan kebijakan penanggulangan HIV/AIDS di Denpasar. Penelitian ini menggunakan metode kualitatif yang dilakukan di Denpasar pada tanggal 11-17 September 2011. Sampel penelitian ini menggunakan informan terpilih yaitu kepala bappeda, pejabat Dinas Kesehatan Kabupaten Denpasar, direktur rumah sakit, puskesmas, ketua komisi penanggulangan AIDS di kabupaten/kota dan pemerhati HIV/AIDS termasuk ODHA. Penelitian menemukan jumlah kasus HIV/AIDS di Kota Denpasar yang tertinggi dan penularan terbesarnya melalui hubungan seks. Namun, dukungan pemerintah daerah dalam upaya pencegahan dan penanggulangan HIV/AIDS terlihat belum maksimal. Padahal kebijakan penanggulangan HIV/AIDS sangat ditentukan oleh cara pandang pemerintah terhadap penyakit HIV/AIDS. Untuk itu, perlu peningkatan pemahaman tentang HIV/AIDS serta pencegahan dan penanganan semua pihak terkait sehingga penanggulangan HIV/AIDS dapat lebih efektif, efisien, dan tepat sasaran.Nationally, Indonesia anticipated HIV/AIDS epidemic, but the number of cases of HIV/AIDS in Bali province from year to year showed an increase in the increasingly alarming. This study aimed to determine the number of cases and the development of policies on HIV / AIDS in Denpasar. This research was conducted using qualitative methods in Denpasar on 11-17 September 2011. The study sample was selected using the informant is head of planning, Denpasar District health officers, the director of the hospital, health center, chairman of the commission on AIDS in the district/city and observer of HIV / AIDS, including people living with HIV. The study found the number of cases of HIV / AIDS in the city of Denpasar is the highest and greatest transmission through sexual intercourse. However, the support of local governments in efforts to prevent and control HIV/AIDS looks not maximized. In fact the policy of HIV/AIDS is largely determined by the government perspective on HIV / AIDS. To that end, should be an increased understanding of HIV/AIDS as well as prevention and treatment of all parties concerned. So that HIV/ AIDS can be more effective, efficient, and targeted.


Entropy ◽  
2020 ◽  
Vol 22 (11) ◽  
pp. 1230 ◽  
Author(s):  
Shuman Sun ◽  
Zhiming Li ◽  
Huiguo Zhang ◽  
Haijun Jiang ◽  
Xijian Hu

Sub-Saharan Africa has been the epicenter of the outbreak since the spread of acquired immunodeficiency syndrome (AIDS) began to be prevalent. This article proposes several regression models to investigate the relationships between the HIV/AIDS epidemic and socioeconomic factors (the gross domestic product per capita, and population density) in ten countries of Sub-Saharan Africa, for 2011–2016. The maximum likelihood method was used to estimate the unknown parameters of these models along with the Newton–Raphson procedure and Fisher scoring algorithm. Comparing these regression models, there exist significant spatiotemporal non-stationarity and auto-correlations between the HIV/AIDS epidemic and two socioeconomic factors. Based on the empirical results, we suggest that the geographically and temporally weighted Poisson autoregressive (GTWPAR) model is more suitable than other models, and has the better fitting results.


2020 ◽  
Vol 9 (1) ◽  
Author(s):  
Patience Adzordor ◽  
Clement Avoka ◽  
Vitalis Bawontuo ◽  
Silas Agbesi ◽  
Desmond Kuupiel

Abstract Background Sub-Saharan Africa (SSA) homes most of the people living with HIV/AIDS in the world. Adolescents/young people are a vulnerable population and at high risk of HIV infection. Identifying and bridging the research gaps on the disclosure of HIV-positive status among adolescents, particularly to their sexual partners, is essential to inform appropriate policy planning and implementation towards preventing HIV transmission. This study will aim to explore literature and describe the evidence on HIV-positive status disclosure among adolescents in SSA. Methods The framework provided by Arksey and O’Malley’s framework and improved by Levac and colleagues will be used to conduct a scoping review. A keyword search for relevant literature presenting evidence on HIV-positive status disclosure among adolescents in SSA will be conducted in CINAHL, PubMed, Science Direct, Google Scholar, and SCOPUS. Date limitations will be removed, but Boolean terms “AND” and “OR” as well as Medical Subject Headings terms will be included where possible and syntax modified to suit the database during the search. Additional relevant articles will be sought from the reference lists of all included studies using a snowballing method. Two reviewers will independently screen the articles at the abstract and full-text screening phases in order to reduce bias and improve the reliability of this study’s findings. A tabular form will be developed using Microsoft Word and piloted for data extraction. Thematic content analysis will be conducted, and a narrative summary of all relevant outcomes reported. Quality appraisal of the included studies for this proposed study will be performed utilizing the recent mixed methods appraisal tool. Discussion The evidence produced by this review may help inform policy and strategies to reduce the incidence of HIV infection among adolescents and improve social support for adolescents living with HIV/AIDS in SSA. It may also reveal literature gaps to guide future researches to further inform HIV policies for adolescents in SSA. Platforms such as peer review journals, policy briefs, and conferences will be used to disseminate this study’s findings.


2011 ◽  
Vol 14 ◽  
pp. S7-S7 ◽  
Author(s):  
Rony Zachariah ◽  
Wim Van Damme ◽  
Vic Arendt ◽  
Jean Claude Schmit ◽  
Anthony D Harries

2006 ◽  
Vol 40 (1) ◽  
pp. 45-52 ◽  
Author(s):  
Rachel Kaplan

The 2005 UNAIDS/WHO Epidemic Update reports that the number of people living with HIV last year worldwide was 40.3 million (1). In 2005, approximately 3.2 million people became newly infected by HIV in Sub-Saharan Africa, the region of the world that is considered the epicenter of the AIDS epidemic (2).Although the rates of HIV are much less in the Middle East and North Africa (MENA) than in Sub-Saharan Africa, some experts believe that without appropriate implementation of surveillance and prevention services, the epidemic will spread to the general population (3). Reportedly, 67,000 people in MENA became infected with HIV in 2005; there are approximately 510,000 people living with HIV in the region (2). Because of cultural and social taboos surrounding the discussion of the acquisition of HIV around the world in general, and in MENA in particular, it is difficult to develop a clear representation of HIV's presence and risk in countries in the Middle East. Based on the information that is available, the main mode of transmission of HIV is sexual contact, with injecting drug use recognized as the second mode of increasing prevalence (2). Without sufficient implementation of surveillance in the region, however, estimated rates of infection may indeed be lower than the actual number of people infected with HIV (4).


Sign in / Sign up

Export Citation Format

Share Document