Saudi Journal of Biological Sciences. http://dx.doi.org/10.1016/j.sjbs.2016.03.006
Open Access
PLOS Medicine | https://doi.org/10.1371/journal.pmed.1002514 March 1, 2018
Eurosurveillance
Impact Factor 5.7
June 2015
www.eurosurveillance.org
Featuring a series of articles on HIV and STI epidemiology, prevention and control among MSM in Europe
Epidemiology
Chagas disease (American trypanosomiasis) is caused by the protozoan parasite Trypanosoma cruzi, and transmitted to humans by infected triatomine bugs, and less commonly by transfusion, organ transplant, from mother to infant, and in rare instances, by ingestion of contaminated food or... drink.1-4 The hematophagous triatomine vectors defecate during or immediately after feeding on a person. The parasite is present in large numbers in the feces of infected bugs, and enters the human body through the bite wound, or through the intact conjunctiva or other mucous membrane.
Vector-borne transmission occurs only in the Americas, where an estimated 8 to 10 million people have Chagas disease.5 Historically, transmission occurred largely in rural areas in Latin America, where houses built of mud brick are vulnerable to colonization by the triatomine vectors.4 In such areas, Chagas disease usually is acquired in childhood. In the last several decades, successful vector control programs have substantially decreased transmission rates in much of Latin America, and large-scale migration has brought infected individuals to cities both within and outside of Latin America.
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HIV testing programmes need to ensure that all clients who test for HIV are provided with correct diagnoses. The accuracy of HIV testing is critical to prevent misdiagnosis, as the consequences of giving an incorrect test result can be serious for clients, HIV testing services, HIV programmes and pu...blic health.
With the evolution of global HIV epidemiology, HIV testing approaches must also evolve to maintain accuracy and efficiency in population-level diagnosis. Reports suggest that misdiagnosis of HIV status may occur when suboptimal testing algorithms and out-of-date testing strategies are used. As a result of changing epidemiology and declining HIV positivity in testing, WHO recommends all countries use a standard three-test strategy to ensure a PPV of at least 99%, minimizing false-positive misdiagnosis. The WHO-recommended HIV testing strategy, along with quality assurance measures such as retesting to verify a positive diagnosis prior to initiation of HIV treatment, is cost-effective as it prevents misdiagnosis and unnecessary initiation of costly lifelong treatment.
This implementation guide provides practical advice on switching to a three-test strategy and instituting other measures that can help national HIV programmes deliver high-quality, accurate HIV testing services and ensure that misdiagnosis is minimized.
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This fact sheet is based on a systematic review of the literature on HPV and cervical cancer epidemiology, and a survey on policies and practices related to the prevention and control of cervical cancer among women living with HIV (WLHIV) to PAHO Member States. It details scorecards on the advances ...of countries against WHO recommendations and international commitments for cervical cancer prevention and control among WLHIV.
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There is paucity of data on the burden and specific drivers operative in the pathogenesis of chronic obstructive pulmonary disease (COPD) in the African setting and populations. Lack of awareness and inadequate knowledge on the aetio-pathogenesis of the disease together with inadequate capacity for ...COPD care contributes to preventive and management challenges. Thus, the majority of patients with COPD are misdiagnosed, misclassified and mismanaged or undertreated. With the struggling improvement in the quality of healthcare in Africa, studies conducted over the last 10 years indicates the rising trends in both the risk factors and the burden of COPD. The role of new risk factors such as indoor pollution, infections with human immunodeficiency virus (HIV) and pulmonary tuberculosis (TB), in the pathogenesis of COPD in Africa is increasingly being recognized. This literature review attempts to collect and synthesize information that could be useful in improving COPD care and informing the governments to take appropriate actions for prevention, diagnosis and management of COPD in Africa.
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PowerPoint Slides for the Geneva IAPAC meeting , 13 October 2016 by Sabin Nsanzimana, MD -Division Manager, HIV, STIs and Viral Hepatitis
Institute of HIV Disease Prevention and Control, Rwanda Biomedical Center AND Basel Clinical Epidemiology& Biostatistics and SwissTPH , University of Basel, Swit...zerland
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Leishmaniasis is a major vector-borne disease caused by obligate intramacrophage protozoa of the genus Leishmania, and transmitted by the bite of phlebotomine female sand flies of the genera Phlebotomus and Lutzomyia, in the old and new worlds, respectively. Among 20 well-recognized Leishmania speci...es known to infect humans, 18 have zoonotic nature, which include agents of visceral, cutaneous, and mucocutaneous forms of the disease, in both the old and new worlds. Currently, leishmaniasis show a wider geographic distribution and increased global incidence. Environmental, demographic and human behaviors contribute to the changing landscape for zoonotic cutaneous and visceral leishmaniasis. The primary reservoir hosts of Leishmania are sylvatic mammals such as forest rodents, hyraxes and wild canids, and dogs are the most important species among domesticated animals in the epidemiology of this disease. These parasites have two basic life cycle stages: one extracellular stage within the invertebrate host (phlebotomine sand fly), and one intracellular stage within a vertebrate host. Co-infection with HIV intensifies the burden of visceral and cutaneous leishmaniasis by causing severe forms and more difficult to manage. The disease is endemic to Ethiopia, and the clinical signs are not pathognomic. The visceral form (Kala-azar) may be confused with other similar conditions such as malaria, tropical splenomegaly, schistosomiasis, milliary tuberculosis, and brucellosis. Similarly, cutaneous leishmaniasis should be differentiated from disease like tropical ulcers, impetigo and leprosy. There are several methods of laboratory diagnosis of leishmaniasis, including parasitological, immunological and molecular. Different forms of treatments are available including oral, parenteral, and topical medications such as pentavalent antimonials, liposomal amphotericin B, miltefosine and paromomycin. Methods of control are largely limited to destruction of animal reservoirs, treatment of infected humans, and management of sand fly populations. Development of an effective vaccine against leishmaniasis has been largely unsuccessful and hinders its prevention.
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Please download the latest report from the official website:
http://www.nacp.go.tz/site/publications/epidemiology-and-research-coordination
Estimating the size of key affected populations (KAP) provides important data for planning and implementing an effective response to the HIV epidemic. In the Philippines, these KAP include males who have sex with males (MSM), female sex workers (FSW), and injecting drug users (IDU). Given the diffic...ulty in reaching these populations, as well as their high mobility, the process consequently entailed a specific methodology to directly estimate the size of KAP.
The national estimate of MSM was 531,500 or 2.2% (1.8%-3.2%) of males aged 15-49. Within this MSM estimate, figures for transgender women (TGW) and male transactional sex workers (MSW) were determined. The national estimate for TGW was 122,800 or about 0.50% (0.40%-0.75%) of males aged 15-49, and 23% of the MSM population. Meanwhile, MSW comprised 0.35% (0.29%-0.53%) of the male population aged 15-49 and 16% of the MSM population, giving a best estimate of 86,600.
The estimate of combined RFSW and FFSW was 66,100 or 0.28% (0.19%-0.40%) of females aged 15-49. Meanwhile, there are approximately 10,000 to 21,700 IDU or 0.04%-0.09% of males aged 15-49.
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Результаты исследования «Изучение распространенности коронавирусной инфекции COVID-19 среди инфицированных ВИЧ пациентов вРоссии ивлияния эпидемии коронавирусной... инфекции COVID-19 на оказание медицинской помощипри ВИЧ-инфекции»
This study shows the negative impact that the COVID-19 pandemic is having on access to HIV care in the Russian Federation and shows that people living with HIV in the country are more susceptible to COVID-19 but less likely to seek testing or treatment.
More than a third of people living with HIV who were surveyed reported some impact on HIV services, including about 4% who reported that they had missed taking antiretroviral therapy because they could not get the medicine and nearly 9% who reported that they had missed taking medicine for tuberculosis prevention. However, the majority of respondents (about 70% of people living with HIV) did not experience problems obtaining antiretroviral therapy and about 22% reported that antiretroviral medicines were delivered to their home. More than 900 respondents from 68 regions of the Russian Federation, including people living with HIV and those who are not, were reached by the study.
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Integrated HIV Behavioral and Serologic Surveillance
Background: Little is known about post-traumatic stress (PTSD) prevalence rates in community samples. This is especially true for the African continent where child-soldiers, HIV/AIDS affected and orphans have been the target for PTSD prevalence studies. Objectives: The aim of this study is to invest...igate the indirect and direct exposure to 20 potentially traumatic events and its relation with PTSD in a Ugandan sample of senior 3rd year students and to perform cross-cultural comparisons with previous studies examining this age group. Socio-economic status, coping styles, negative affect, and somatization are further examined.
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UNAIDS leads the world's most extensive data collection on HIV epidemiology, programme coverage and finance and publishes the most authoritative and up-to-date information on the HIV epidemic.
Visceral leishmaniasis is an important disease in East Africa where recurrent outbreaks occur. Leishmania-HIV coinfected people have high chance of developing the full-blown clinical disease, and high relapse and mortality rates. Poverty, malnutrition and population movements in endemic areas increa...se the risk of developing VL. Early diagnosis and effective prompt treatment reduce the prevalence of the disease and prevents disabilities and death. This course aims at providing health workers with the necessary knowledge to understand the epidemiology, diagnosis, treatment, surveillance and outbreak investigation of this important disease in East Africa.
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As part of the UN’s data strategy—which seeks to nurture data as a strategic asset for insight, impact and integrity—UNAIDS plays an indispensable role in generating data for effective action against the AIDS pandemic. It leads the
world’s most extensive data collection on HIV epidemiology,... programme coverage, policy and finance, and it publishes the most authoritative and up-to-date information on the HIV pandemic and response. The UNAIDS database of countryreported data is a foundational pillar for global and regional AIDS programmes, research, advocacy and resource mobilization
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The consolidated guidelines are expected to provide the basis and rationale for the development of national guidelines for LTBI management, adapted to the national and local epidemiology of TB, the availability of resources, the health infrastructure and other national and local determinants. The gu...idelines are to be used primarily in national TB and HIV control programmes, or their equivalents in ministries of health, and for other policy-makers working on TB and HIV and infectious diseases. They are also appropriate for officials in other line ministries with work in the areas of health.
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