scholarly journals The Microbiological Context of HIV Resistance: Vaginal Microbiota and Mucosal Inflammation at the Viral Point of Entry

2012 ◽  
Vol 2012 ◽  
pp. 1-10 ◽  
Author(s):  
John J. Schellenberg ◽  
Francis A. Plummer

Immune activation is increasingly recognized as a critical element of HIV infection and pathogenesis, causing expansion of virus founder populations at the mucosal port of entry and eventual exhaustion of cellular immune effectors. HIV susceptibility is well known to be influenced by concurrent sexually transmitted infections; however, the role of commensal vaginal microbiota is poorly characterized. Bacterial vaginosis (BV) is a risk factor for HIV acquisition in studies worldwide; however, the etiology of BV remains enigmatic, and the mechanisms by which BV increases HIV susceptibility are not fully defined. A model of how vaginal microbiota influences HIV transmission is considered in the context of a well-established cohort of HIV-exposed seronegative (HESN) commercial sex workers (CSW) in Nairobi, Kenya, many of whom have increased levels of anti-inflammatory factors in vaginal secretions and reduced peripheral immune activation (immune quiescence). Elucidation of the relationship between complex microbial communities and inflammatory mucosal responses underlying HIV infection should be a priority for future prevention-focussed research.

1998 ◽  
Vol 9 (3) ◽  
pp. 146-150 ◽  
Author(s):  
Salif Lankoande Nicolas ◽  
Meda Lassana Sangare ◽  
Issaka P Compaore ◽  
Joseph Catraye ◽  
Paul T Sanou ◽  
...  

Summary: Little information is available regarding human immunodeficiency virus (HIV) infection among female sex workers (FSW) in Burkina Faso, West Africa. A cross-sectional study was conducted in Ouagadougou and Bobo-Dioulasso, the 2 largest cities of the country, to determine the prevalence of HIV infection and other sexually transmitted diseases (STDs) among FSWs, and to investigate the factors which were associated with HIV infection in this population. From October to November 1994, 426 FSWs were recruited. The method of anonymous and unlinked HIV screening recommended by the World Health Organization (WHO) was used. The overall HIV seroprevalence was 58.2% (95% confidence interval: 53.4-62.9) and 52.6% of FSWs had at least one STD agent. The most common STDs were trichomoniasis (23%), syphilis (15%) and gonorrhoea (13%). In a logistic regression analysis, risk factors for HIV infection were high gravidity ( 2 pregnancies), low perception of personal risk of HIV infection, syphilis and the presence of genital warts. These results suggest that FSWs in Burkina Faso need better information about HIV transmission and prevention and then need better access to STD detection and management services.


Sexual Health ◽  
2018 ◽  
Vol 15 (3) ◽  
pp. 246 ◽  
Author(s):  
Lillian Mwanri ◽  
Nelsensius Klau Fauk ◽  
Christina Yeni Kustanti ◽  
Atik Ambarwati ◽  
Maria Silvia Merry

Background The spread of HIV infection among men in Indonesia continues to increase every year. Clients of female sex workers (FSWs) are a group at higher risk of acquiring HIV infection due to their frequent engagement in sexual acts with sex workers. This study aimed to identify factors of susceptibility to HIV infection among clients of FSWs. Methods: A qualitative inquiry using one-on-one in-depth interviews was conducted in the Belu and Malaka districts of Indonesia from January to April 2017. The study participants (n =42) were the clients of FSWs recruited using the snowball sampling technique. The inclusion criteria were: being a client of FSWs and being aged 18 years or more. Data were analysed using a framework analysis. Results: Findings were grouped into two main emerging themes that included behavioural and socioeconomic factors. Behavioural factors that mediated HIV susceptibility among clients of FSWs were: frequent engagement in unsafe sex with multiple sex workers; low perceptions of the relevance of available HIV and AIDS services and limited access to these services; and HIV stigma or fear of being labelled as HIV positive. Socioeconomic factors included: participants’ economic situation; and individuals’ household responsibility and ability to afford FSWs services. Conclusions: The study results indicate the need to reformulate and improve HIV and AIDS-related services, including increasing the level of availability of HIV service points and the dissemination of knowledge and information about HIV and AIDS and condom use and making them accessible to both FSWs and their clients in Belu and Malaka districts.


1994 ◽  
Vol 14 (4) ◽  
pp. 403-416 ◽  
Author(s):  
Ademola J. Ajuwon ◽  
Oladimeji Oladepo ◽  
Joshua D. Adeniyi ◽  
William R. Brieger

The Human Immunodeficiency Virus (HIV) and Acquired Immune Deficiency Syndrome (AIDS) have been documented as a primarily urban phenomenon in Nigeria. The risk of spread to rural communities, where the largest portion of the population still lives, exists. This article presents a qualitative research study that was designed to explore sexual practices in a rural Nigerian community that held potential risk for introducing HIV into the community and for enabling HIV transmission should an infected person enters local sexual networks, in the small town of Ago-Are, Oyo State. Seven key informant interviews, in-depth interviews and observations with five commercial sex workers (CSWs), and focus group discussions (FGD) with married and single male and female residents were held. CSWs were found to be the most likely route whereby HIV could enter the community, both because of their own mobility, being resident in the community on average only nine months, and because of the mobility of their main clients, migrant farm laborers and commercial drivers. This did not preclude local patronage, which was more discrete. Another possible point of entry for HIV was through casual sexual relations during ceremonies, holidays and festivals, when towns' people working in the large urban centers came home. Within the community, extramarital sexual relations were posited as a likely route for spread within the community. The continued existence of a taboo against sexual intercourse while a mother is breastfeeding, frequent informal divorces and a tendency toward polygamy were identified by FGD members as factors that encourage extra-marital sex. The strong role that social and religious associations play in the community was identified as an ideal mechanism for health education to prevent HIV/AIDS.


2010 ◽  
Vol 138 (3-4) ◽  
pp. 219-224 ◽  
Author(s):  
Dragan Ilic ◽  
Sandra Sipetic ◽  
Vesna Bjegovic

Introduction. HIV in Serbia is most often transmitted through sexual contact, and therefore numerous prevention activities are geared towards sex workers (SW). Objective. To analyze the differences in knowledge, attitudes and risky behaviour between indoor and street SW in Belgrade; to examine the accessibility of health services to this vulnerable group. Methods. In this behavioural cross-sectional study, 113 street and 78 indoor SW were included. The sampling method used was snowball samples. Data were gathered through structured questionnaires. Results. Around 15% of respondents used drugs intravenously. Around 60% of SW used a condom during the last sexual intercourse with their private partner, and around 90% with a commercial partner. Indoor SW had lower levels of education more often than outdoor SW, and they used marijuana, sedatives and painkillers on a daily basis. A significantly higher number of indoor SW were informed about HIV, HBV and HCV testing, and that the risk for HIV infection is not lower if a condom is used exclusively for vaginal sex. Indoor SW reported using health services and testing and counseling for HIV, HBV and HCV more frequently than outdoor SW. Outdoor SW had significantly more sex partners in the previous month than indoor SW. Indoor SW recognized more frequently that providing sex services posed a higher risk for HIV infection. Conclusion. The results of this research study show that even though outdoor SW had higher levels of education than indoor SW, their level of knowledge about HIV transmission was lower and they reported more risky behaviour than indoor SW. Data show that both groups reported not taking care of their health.


1998 ◽  
Vol 18 (3) ◽  
pp. 331-356 ◽  
Author(s):  
Kenzie A. Cameron ◽  
Kim Witte ◽  
Maria Knight Lapinski ◽  
Solomon Nzyuko

Although HIV infection is now seen as pandemic in many parts of Africa, little is known about existing perceptions and knowledge regarding the disease or about the use of preventive measures among groups with the highest infection rates. Further, many call for theoretically-based formative evaluations and interventions, yet few appear to utilize theory to determine perceptions and knowledge and to evaluate existing campaigns. This project reports the results of a theoretically-based formative evaluation conducted with commercial sex workers, truck drivers and their assistants, and young men at three truck stops along the Trans-Africa Highway in Kenya. The theoretical basis for the project was the Extended Parallel Process Model (EPPM), a health risk message theory. Results indicate that the participants appear to have high levels of knowledge and threat, coupled with apparent low levels of efficacy. According to the theoretical perspective used, these results suggest that participants may be putting themselves at risk for HIV infection.


2011 ◽  
Vol 77 (12) ◽  
pp. 4066-4074 ◽  
Author(s):  
John J. Schellenberg ◽  
Matthew G. Links ◽  
Janet E. Hill ◽  
Tim J. Dumonceaux ◽  
Joshua Kimani ◽  
...  

ABSTRACTResistance to HIV infection in a cohort of commercial sex workers living in Nairobi, Kenya, is linked to mucosal and antiinflammatory factors that may be influenced by the vaginal microbiota. Since bacterial vaginosis (BV), a polymicrobial dysbiosis characterized by low levels of protectiveLactobacillusorganisms, is an established risk factor for HIV infection, we investigated whether vaginal microbiology was associated with HIV-exposed seronegative (HESN) or HIV-seropositive (HIV+) status in this cohort. A subset of 44 individuals was selected for deep-sequencing analysis based on the chaperonin 60 (cpn60) universal target (UT), including HESN individuals (n= 16), other HIV-seronegative controls (HIV-N,n= 16), and HIV+individuals (n= 12). Our findings indicate exceptionally high phylogenetic resolution of thecpn60UT using reads as short as 200 bp, with 54 species in 29 genera detected in this group. Contrary to our initial hypothesis, few differences between HESN and HIV-N women were observed. Several HIV+women had distinct profiles dominated byEscherichia coli. The deep-sequencing phylogenetic profile of the vaginal microbiota corresponds closely to BV+and BV−diagnoses by microscopy, elucidating BV at the molecular level. A cluster of samples with intermediate abundance ofLactobacillusand dominantGardnerellawas identified, defining a distinct BV phenotype that may represent a transitional stage between BV+and BV−. Several alpha- and betaproteobacteria, including the recently described speciesVariovorax paradoxus, were found to correlate positively with increasedLactobacilluslevels that define the BV−(“normal”) phenotype. We conclude thatcpn60UT is ideally suited to next-generation sequencing technologies for further investigation of microbial community dynamics and mucosal immunity underlying HIV resistance in this cohort.


2018 ◽  
Vol 10 (1) ◽  
Author(s):  
Satya Narayan Yadav

ObjectiveThe objective was to assess the risk of HIV infection among the seasonal labour migrants of Nepal.IntroductionHIV and AIDS is not a new problem to global community and human civilization. Though much efforts had been taken yet its devastating effects can be seen in many areas like human productivity, public health, human rights etc. Nepal is experiencing a concentrated epidemic of HIV with prevalence at, or over, 5 percent in certain high-risk groups, such as intravenous drug users (IDUs), MSM, FSW, and migrant laborers in India who go to cities such as Mumbai. The possibility of transmission of HIV infection from these high-risk groups to the general population is a serious health concern. Nepal’s vulnerability to HIV has increased because of several factors including poverty coupled with the lack of employment opportunities, large-scale migration and ten years of conflict. [1]IBBS survey conducted in 2008 in mid-Terai regions reported the prevalence of HIV among seasonal migrants who had sexual contact with female sex workers in India was 2.6% [1] which indicates unsafe sex being one of the major factors of HIV transmission among the seasonal migrants. Similar study conducted among seasonal migrants reported that only 62% used condom during sex with sex worker and HIV infection was found only on those who visited Mumbai (6.1%) and had sex with sex workers without using condom [2].Seasonal migration for income generation in Mid-Terai part of Nepal is present since the time immemorial. People migrate to India generally to Bihar, Punjab, Uttaranchal, Maharashtra, Uttar Pradesh, Delhi states. [2]Risk of HIV transmission among the seasonal migrants is very high. Separated from their spouses and adrift from social bindings, many to these migrants exercise unsafe sexual practices. Regular monitoring and health assistance to this population is lacking, especially in the case of those who migrate to neighboring countries like India, compared to those who receive authorized permission to work in other countries.MethodsAnalytical cross-sectional study was conducted to assess the risk of HIV among seasonal Labour migrants of three VDCs from three district of mid Terai Region of Nepal which is the transition point for seasonal migrants going to India. The study population was the male migrants of mid-Terai region visiting the study area who give oral consent and show interest to participate. 333 seasonal labor migrants’ men aged between 18 to 47 years who went to India for work for at least three months and have returned home within the last three years was selected purposively.ResultsThe Results found that majority of migrants were 15-25 age group which accounts for the 69.4% of the total participants and most of the respondents were found Disadvantaged dalit caste group which accounts for the 60.96 % of the total participants whereas 3.9% of participants were upper caste as well minority religious group. Majority of the participants were Hindu which accounts 84.7% and other were Muslim, Buddhist and Christian (15.3%). About 42 percent of the participants had their sexual intercourse onset at the age less than 18 years of age. The majority of the Migrants were found to be married, i.e. 86.49 percent. Among those that had sex with women 42.68 percent ever had sex with Female sex Worker (FSW) and rest 57.33 percent had no sex with FSW in abroad It was reported that 61.25 percent ever had sex with FSW in Nepal among them those who had sex with FSW 79.59 percent of the participants used condom during last sexual contact with FSWs in Nepal whereas 20.41 percent of the participants had not used condom. About 27.27 percent of the participants had sexual contact with the male partner whereas 72.73% had reported never had sexual contact with male partners. 53.22 % used condoms when having sexual contact with the male partners and 46.77 did not used condom.Among total respondents, 23.7 percent migrants were at risk of HIV and 76.3 percent migrants did not at risk of HIV. The risk of HIV in age group distribution found that, age group of 26-35 years was found to be 3.40 times higher in risk than 36-45 years. Similarly the risk of HIV was 4.643 times higher among age group 15-25 years as compared to 36-45 years. Among them Disadvantage Dalit caste had more risk than Upper caste. Similarly illiterate had more risk than Literate. In distribution of risk of HIV unmarried had high than ever married.ConclusionsThe Study showed that seasonal migrants of Nepal have increased vulnerability to HIV. The unmarried labor worker and disadvantaged caste group were in the higher risk of facing HIV infection. It is necessary to design better service delivery focusing on these areas and need to explore the real situations of labor migrants.ReferencesIntegrated Biological and Behavioural Surveillance survey (IBBS) among seasonal migrants of western and mid to far western regions, 2008, FHI/New Era.Integrated Biological and Behavioural Surveillance survey 2002, FHI/New Era, IBBS.National Center for AIDS and STD Control 2007 national estimates of HIV.Lowe D, Francis C 2006 protecting people on the move :applying lessons learned in Asia to improve HIV/AIDS interventions for mobile people. FHIPoudel KC, Masamine J, Okumura J, Joshi AB, Wakai S. 2004. Migrants’ risky sexual behaviours in India and at home in far western Nepal. “Tropical Medicine and International Health 9(8):897-903”.Poudel KC, Okumura J, Sherchand JB, Jimba M, Murakami I, Wakai S. 2003. Mumbai disease in far western Nepal: HIV infection and syphilis among male migrant-returnees and non-migrants. “Tropical Medicine and International Health 8(10):933-9”.


2020 ◽  
Vol 6 (1) ◽  
pp. 5-11
Author(s):  
Bala Augustine Nalah ◽  
Azlinda Azman ◽  
Paramjit Singh Jamir Singh

Harmful cultural practices have psychosocial implications on stigmatization and vulnerability to HIV infection among HIV positive living in North Central Nigeria. To understand this, we conducted qualitative interviews with purposively selected 20 diagnosed HIV positive to explore how culture influences stigmatization and HIV transmission. Data was collected using audio-recorder, transcribed, and analyzed through thematic analysis using ATLAS.ti8 software to code and analyze interview transcripts. The coded data were presented using thematic network analysis to visualize the theme, sub-themes, and quotations in a model. The findings reveal that lack of education was a significant determinant for the continual practice of harmful cultural rites, thereby increasing the risk of HIV infection and stigmatization. Hence, six cultural facilitators have been identified to include female genital mutilation, lack of education, tribal marks and scarification, postpartum sexual abstinence during breastfeeding, sexual intercourse during menstruation, and gender inequality, polygamy, and inheritance law. We conclude that educational teachings and advocacy campaigns be organized in rural schools and public places on the implications of harmful cultural practice to health and psychological well-being. We recommend that the social workers and behavioral scientists should collaborate with other agencies to employ a behavioral-based intervention in eliminating cultural practices and HIV stigma.


2016 ◽  
Vol 5 (1) ◽  
Author(s):  
Archana Kaushik

Sexual minorities are among the most marginalized groups in the society. Sero-positivity accentuates social exclusion among the sexual minorities. The paper aims to appraise the factors that make Men who have Sex with Men (MSM) vulnerable to HIV infection and influence their health seeking behaviors. It highlights two major domains socio-cultural and interpersonal variables. Qualitative in nature and based on ten in-depth case studies of HIV infected MSM, the study is located in Delhi, India. Factors such as age, marital status, child sexual abuse, multiple sex partners, are crucial in influencing their vulnerability. Socio-cultural milieu puts structural barriers restricting integration of MSM in the society. Cultural values do not allow talking about sex, which hampers healthy sexual behaviors. Exhibiting aggression, sexual violence, visiting sex-workers etc. are considered as important aspects to prove manhood. At the interpersonal level, possessiveness, betrayal, infidelity, heartbreak, strong emotional whirlpool when love-relations go incongruent, all takes a heavy toll of their mental and physical health. These variables socially exclude the sexual minorities from the mainstream life. Findings show positive (disclosing to family, abstinence, spiritual growth) and negative (suicide-attempts, drug-use) ways of coping among the MSM respondents. Critical areas of concern for service-providers while planning interventions for empowering people with sexual minority are delineated.


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