Issifou Yaya
Aix-Marseille University
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Featured researches published by Issifou Yaya.
BMC Public Health | 2014
Issifou Yaya; Dadja Essoya Landoh; Bayaki Saka; P’Niwè Massoubayo Patchali; Peter Wasswa; Abdoul-samadou Aboubakari; Mathias Kouamé N’Dri; Akouda Patassi; K. Kombaté; Palokinam Pitché
BackgroundAdherence to antiretroviral therapy (ART) is beneficial in reducing the risk of emergence of HIV resistant strains. Adherence to ART among Persons Living with HIV/AIDS (PLWHA) is influenced by several factors related to the patient, the medication, and health facilities. In Togo, previous studies on adherence to ART have reported good adherence to ART during the first year of follow-up. However these may hide many disparities dues to cultural specificities which may differ across geographic areas of the country. We sought to determine the level of adherence to ART and document the associated factors among PLWHA at the regional hospital of Sokodé, Togo.MethodsThis was an analytical cross-sectional study conducted from May to July 2013 at the regional hospital of Sokodé among 291 PLWHA who had been on ART for at least three months before the study.ResultsA total of 291 PLWHA on ART were enrolled in the study. The mean age (±SD) was 37.3 ± 9.3 years and the sex ratio (Male/Female) was 0.4. Among them, 195 (67.0%) were living with their partners and 210 (72.2%) had formal education. Two-thirds (194/291; 66.7%) of the PLWHA interviewed lived in urban areas. The global adherence to ART was 78.4%; the factors associated with ART adherence were: level of education (aOR = 3.54; p = 0.027), alcohol consumption (aOR = 0.43; p = 0.033), ART perception (aOR = 2.90; p = 0.026) and HIV status disclosure to sexual partner (aOR = 7.19; p ≤ 0.001).ConclusionAlthough the level of adherence to ART in this study was higher than those reported in some studies in Sub-Saharan Africa, it remains sub-optimal and needs improvement. This may therefore hinder the implementation of efficient interventions related to access to ART services.
PLOS ONE | 2015
Issifou Yaya; Bayaki Saka; Dadja Essoya Landoh; P’Niwè Massoubayo Patchali; Akouda Patassi; Abdoul-samadou Aboubakari; Makawa-Sy Makawa; Mathias Kouamé N’Dri; Sékandé Senanou; Bassan Lamboni; Daoudou Idrissou; Kao Tanang Salaka; Palokinam Pitché
Background Many studies have reported factors associated with HIV status disclosure among People Living With HIV and AIDS (PLWHA) but very few were conducted among PLWHA receiving ART. In Togo, no study on HIV status disclosure to sexual partners has been conducted among PLWHA on ART yet. We sought to document factors associated with HIV status disclosure among PLWHA receiving ART at Sokodé regional hospital in Togo. Method This was a cross-sectional study conducted from May to July 2013 at the regional hospital of Sokodé among 291 PLWHA who had been on ART for at least three months. Results A total of 291 PLWHA on ART were enrolled in this study. Their mean age (±SD) was 37.3±9.3 years and the sex ratio (Male/Female) was 0.4. Among them, 215 (74.6%) completed the questionnaire on HIV sero-status disclosure. We found that 131 PLWHA (60.9%) had disclosed their HIV sero-status to their sexual partners; 130 (60.5%) were aware of the HIV status of their sexual partners. In the multivariate analysis, the factors associated with HIV status disclosure to sexual partners were: adherence to ART (aOR = 4.89; 95%CI = [1.52; 15.78]), sexual partner awareness of HIV sero-status (aOR = 52.73; 95%CI = [14.76; 188.36]) and marital status of PLWHA (aOR = 6.10; 95%CI = [1.74; 21.37]). Conclusion This study allowed us to note that the disclosure of HIV status to sexual partners is relatively low and to document the associated factors such as adherence to ART, sexual partner awareness of HIV sero-status and marital status.
PLOS ONE | 2016
Issifou Yaya; Dadja Essoya Landoh; Bayaki Saka; Kokou Vignikin; Abdoul-samadou Aboubakari; Kouamé Mathias N’Dri; Kodjo Dodji Gbetoglo; Atavi-Mensah Edorh; Komla Ahlegnan; Holali Comlan Yenkey; Ayawavi Sitsopé Toudeka; Palokinam Pitché
Background In 2008, the proportion of truck drivers who were not systematically protected during sex was 63% with casual partners and 60% with sex workers. Despite the high level of knowledge on HIV/AIDS and the growing awareness of the existence of the risk of HIV infection, condom use always encounters resistance among truck drivers in Togo. We sought to document the factors associated with condom use during casual sex among trucks’ drivers in Togo. Methods This was an analytical cross-sectional study conducted in 2010 and targeted truckers at truck station on the two main roads of Togo, Lomé-Cinkassé and Kodjoviakopé-Sanvee Condji. Results In this study, 1,782 trucks’ drivers and their helpers were interviewed. All were men, and their mean age was 28.8 ± 8.8 years. Trucks’ drivers were doing an average of 3 stops on their journeys and 1,229 (69%) of them had at least two years of experience in the work. Of the 1,782 trucks’ drivers, only 620 (34.8%) had consistently used condoms during casual sex in the last three months. In multivariate analysis, predictors were: education level (primary schooling: OR = 1.54; p = 0.002; Secondary schooling and higher OR = 1.38; p = 0.036), good knowledge of ways of HIV transmission (OR = 1.53; p = 0.000), tested for HIV (OR = 1.67, p = 0.000), duration in the profession (2–5 years: OR = 1.43, p = 0.008; more than 5 years: OR = 1.38, p = 0.027), and HIV risk’s perception (OR = 1.44, p = 0.000). Conclusion These results highlight factors associated with consistent condom use during casual sex by truck drivers in Togo. This is a key population group at high risk of HIV transmission toward which the national HIV/AIDS control program should strengthen the HIV prevention strategies.
Case reports in infectious diseases | 2017
Akouda Patassi; Dadja Essoya Landoh; Agballa Mebiny-Essoh Tchalla; Wemboo Afiwa Halatoko; Hamadi Assane; Bayaki Saka; Mouchedou Abdoukarim Naba; Issifou Yaya; Kossi Atsissinta Edou; Tsidi Tamekloe; Abiba Kere Banla; Kokou Mawule Davi; Magloire Manga; Yao Kassankogno; Dominique Salmon-Ceron
Background Lassa fever belongs to the group of potentially fatal hemorrhagic fevers, never reported in Togo. The aim of this paper is to report the first two cases of Lassa fever infection in Togo. Case Presentation The two first Lassa fever cases occurred in two expatriates health professionals working in Togo for more than two years. The symptoms appeared among two health professionals of a clinic located in Oti district in the north of the country. The absence of clinical improvement after antimalarial treatment and the worsening of clinical symptoms led to the medical evacuation. The delayed diagnosis of the first case led to a fatal outcome. The second case recovered under ribavirin treatment. Conclusion The emergence of this hemorrhagic fever confirms the existence of Lassa fever virus in Togo. After a period of intensive Ebola virus transmission from 2013 to 2015, this is an additional call for the establishment and enhancement of infection prevention and control measures in the health care setting in West Africa.
PLOS ONE | 2018
Issifou Yaya; Perrine Roux; Fabienne Marcellin; Linda Wittkop; Laure Esterle; Bruno Spire; Stéphanie Dominguez; Boni Armand Elegbe; Lionel Piroth; Philippe Sogni; Dominique Salmon-Ceron; Maria Patrizia Carrieri
Background Direct-acting antivirals (DAA) have dramatically increased HCV cure rates with minimal toxicity in HIV-HCV co-infected patients. This study aimed to compare the socio-behavioral characteristics of patients initiating pegylated-interferon (PEG-IFN)-based HCV treatment with those of patients initiating DAA-based treatment. Methods ANRS CO13 HEPAVIH is a national multicenter prospective cohort started in 2005, which enrolled 1,859 HIV-HCV co-infected patients followed up in French hospital outpatient units. Both clinical/biological and socio-behavioral data were collected during follow-up. We selected patients with socio-behavioral data available before HCV treatment initiation. Results A total of 580 patients were included in this analysis. Of these, 347 initiated PEG-IFN-based treatment, and 233 DAA-based treatment. There were significant differences regarding patient mean age (45 years±6 for the PEG-IFN group vs. 52 years±8 for the DAA group, p<0.001), unstable housing (21.4% vs. 11.2%, p = 0.0016), drug use (44.7% vs. 29.6%, p = 0.0003), regular or daily use of cannabis (24.3% vs. 15.6%, p = 0.0002), a history of drug injection (68.9% vs 39.0%, p<0.0001) and significant liver fibrosis (62.4% vs 72.3%, p = 0.0293). In multivariable analysis, patients initiating DAA-based treatment were older than their PEG-IFN-based treatment counterparts (aOR = 1.17; 95%CI [1.13; 1.22]). Patients receiving DAA treatment were less likely to report unstable housing (0.46 [0.24; 0.88]), cannabis use (regular or daily use:0.50 [0.28; 0.91]; non-regular use: 0.41 [0.22; 0.77]), and a history of drug injection (0.19 [0.12; 0.31]). Conclusion It is possible that a majority of patients who had socio-economic problems and/or a history of drug injection and/or a non-advanced disease stage were already treated for HCV in the PEG-IFN era. Today, patients with unstable housing conditions are prescribed DAA less frequently than other populations. As HCV treatment is prevention, improving access to DAA remains a major clinical and public health strategy, in particular for individuals with high-risk behaviors.
Nutrients | 2018
Issifou Yaya; Fabienne Marcellin; Marie Costa; Philippe Morlat; Camelia Protopopescu; Gilles Pialoux; Melina Erica Santos; Linda Wittkop; Laure Esterle; Anne Gervais; Philippe Sogni; Dominique Salmon-Ceron; Maria Patrizia Carrieri
Background: Coffee intake has been shown to modulate both the effect of ethanol on serum GGT activities in some alcohol consumers and the risk of alcoholic cirrhosis in some patients with chronic diseases. This study aimed to analyze the impact of coffee intake and alcohol consumption on advanced liver fibrosis (ALF) in HIV-HCV co-infected patients. Methods: ANRS CO13-HEPAVIH is a French, nationwide, multicenter cohort of HIV-HCV-co-infected patients. Sociodemographic, behavioral, and clinical data including alcohol and coffee consumption were prospectively collected using annual self-administered questionnaires during five years of follow-up. Mixed logistic regression models were performed, relating coffee intake and alcohol consumption to ALF. Results: 1019 patients were included. At the last available visit, 5.8% reported high-risk alcohol consumption, 27.4% reported high coffee intake and 14.5% had ALF. Compared with patients with low coffee intake and high-risk alcohol consumption, patients with low coffee intake and low-risk alcohol consumption had a lower risk of ALF (aOR (95% CI) 0.24 (0.12–0.50)). In addition, patients with high coffee intake had a lower risk of ALF than the reference group (0.14 (0.03–0.64) in high-risk alcohol drinkers and 0.11 (0.05–0.25) in low-risk alcohol drinkers). Conclusions: High coffee intake was associated with a low risk of liver fibrosis even in HIV-HCV co-infected patients with high-risk alcohol consumption.
BMJ Open | 2018
Issifou Yaya; Akouda Patassi; Dadja Essoya Landoh; Essodjèlouna Manani Bignandi; Kanfitine Kolani; Abdel-Daim Daou Namoro; P’Niwè Massoubayo Patchali; Lihanimpo Djalogue; Didier K. Ekouevi; Bayaki Saka
Introduction Contraceptive use among HIV-infected women in Togo is poorly documented. We aim at assessing the prevalence of modern contraceptive use and associated factors among HIV-infected women in Togo. Design Cross-sectional study. Setting The study was conducted in five HIV care centres in the Centrale and Kara regions in Togo. Participants We included 461 HIV-positive women aged between 15 and 49 years and who were sexually active. Main outcome measure The outcome variable was HIV-infected women who were using modern contraceptive methods. Results A total of 461 HIV-infected women were interviewed, with an average age of 34.3 (±7.1). Among them, 332 (73.1%) women reported using contraceptive methods, mostly condom alone (74.7%) or in combination with hormonal contraceptive (16.9%). In multivariate analysis, education level (primary: adjusted OR (aOR)=1.99, 95% CI (1.05 to 3.76); secondary level and higher: aOR=3.95, 95% CI (2.03 to 7.67)), WHO clinical stage (stage II: aOR=0.7, 95% CI (0.37 to 1.33)), follow-up in private care facilities (aOR=2.54, 95% CI (1.22 to 5.29)) and having a child (aOR=2.51, 95% CI (1.41 to 4.5)) were associated with higher contraceptive use, while marital status (living in union: aOR=0.45, 95% CI (0.28 to 0.74)) and WHO stages III and IV (aOR=0.47, 95% CI (0.24 to 0.94)) were associated with lower contraceptive use. Conclusion About three-quarters of sexually active HIV-infected women in Togo were using contraceptive methods, and private health facilities favoured this contraceptive use. It is important to strengthen the implementation of interventions to increase the incentives for HIV-infected women to use contraception in Togo.
Digestive Diseases and Sciences | 2017
Issifou Yaya; Perrine Roux; Fabienne Marcellin; Dominique Salmon-Ceron; Maria-Patrizia Carrieri
Comment on Engagement in Care of High-Risk Hepatitis C Patients with Interferon-Free Direct-Acting Antiviral Therapies. [Dig Dis Sci. 2017].
BMC Public Health | 2014
Issifou Yaya; Bayaki Saka; Dadja Essoya Landoh; P'Niwè Massoubayo Patchali; Makawa-Sy Makawa; Sékandé Senanou; Daoudou Idrissou; Bassan Lamboni; Palokinam Pitché
BMC Public Health | 2016
Dadja Essoya Landoh; Farihétou Ouro-kavalah; Issifou Yaya; Anna-Lea Kahn; Peter Wasswa; Anani Lacle; Danladi Ibrahim Nassoury; Sheba Gitta; Abdramane Bassiahi Soura