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      Seroprevalence of Toxoplasma gondii in newly diagnosed HIV seropositive patients

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          Abstract

          Background & objectives:

          Immunocompromised individuals mainly HIV infected patients are at a great risk for developing toxoplasmosis. The presence of toxoplasmosis among HIV-infected patients directly correlates with the prevalence of anti- Toxoplasma gondii antibodies and the degree of immunosuppression (measured by CD4 counts). The data regarding the seroprevalence of toxoplasmosis in HIV-infected patients are scarce in India. Therefore, this study was initiated to find out the seroprevalence of toxoplasmosis in treatment-naïve HIV seropositive patients and to determine its association with CD4 counts, if any.

          Methods:

          Four hundred newly diagnosed antiretroviral therapy (ART) naïve adult HIV positive patients coming for CD4 count estimation were tested for the presence of anti- Toxoplasma IgG antibodies. Risk factors for acquisition of toxoplasmosis as well as the age, gender and CD4 counts of the patient were noted down.

          Results:

          Toxoplasma IgG was positive in 292 (73%) patients, and the positivity was not related to their CD4 counts. The proportion of anti- Toxoplasma IgG positivity showed no significant association with age, gender and risk factors of the patients.

          Interpretation & conclusions:

          In the absence of any specific vaccine or prophylaxis for toxoplasmosis, it is pertinent to screen all HIV-positive patients for Toxoplasma IgG at diagnosis, irrespective of their CD4 counts, and sensitize them about the means to prevent either acquisition or activation of infection to avert the development of toxoplasmic encephalitis.

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          Most cited references20

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          Toxoplasmic encephalitis in AIDS.

          B. J. Luft, J Remington (1992)
          Involvement of the central nervous system (CNS) is common in patients with advanced disease due to human immunodeficiency virus (HIV). Symptoms range from lethargy and apathy to coma, incoordination and ataxia to hemiparesis, loss of memory to severe dementia, and focal to major motor seizures. Involvement may be closely associated with HIV infection per se, as in the AIDS dementia complex, but is frequently caused by opportunistic pathogens such as Toxoplasma gondii and Cryptococcus neoformans or malignancies such as primary lymphoma of the CNS. The clinical presentations of attendant and direct CNS involvement are remarkably non-specific and overlapping, yet a correct diagnosis is critical to successful intervention. Toxoplasmic encephalitis is one of the most common and most treatable causes of AIDS-associated pathology of the CNS. A great deal has been learned in the last 10 years about its unique presentation in the HIV-infected patient with advanced disease. Drs. Benjamin J. Luft of the State University of New York at Stony Brook and Jack S. Remington of the Stanford University School of Medicine and Palo Alto Medical Foundation's Research Institute have studied T. gondii for many years and are two of the leading experts in the field. This commentary comprises an update of their initial review (J Infect Dis 1988;157:1-6) and a presentation of the current approaches to diagnosing and managing toxoplasmic encephalitis in HIV-infected patients.
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            Guidelines for prevention and treatment of opportunistic infections in HIV-infected adults and adolescents: recommendations from CDC, the National Institutes of Health, and the HIV Medicine Association of the Infectious Diseases Society of America.

            T. Brooks, Matthew E Kaplan, Henry Masur … (2009)
            This report updates and combines earlier versions of guidelines for the prevention and treatment of opportunistic infections (OIs) in HIV-infected adults (i.e., persons aged >/=18 years) and adolescents (i.e., persons aged 13--17 years), last published in 2002 and 2004, respectively. It has been prepared by the Centers for Disease Control and Prevention (CDC), the National Institutes of Health (NIH), and the HIV Medicine Association (HIVMA) of the Infectious Diseases Society of America (IDSA). The guidelines are intended for use by clinicians and other health-care providers, HIV-infected patients, and policy makers in the United States. These guidelines address several OIs that occur in the United States and five OIs that might be acquired during international travel. Topic areas covered for each OI include epidemiology, clinical manifestations, diagnosis, prevention of exposure; prevention of disease by chemoprophylaxis and vaccination; discontinuation of primary prophylaxis after immune reconstitution; treatment of disease; monitoring for adverse effects during treatment; management of treatment failure; prevention of disease recurrence; discontinuation of secondary prophylaxis after immune reconstitution; and special considerations during pregnancy. These guidelines were developed by a panel of specialists from the United States government and academic institutions. For each OI, a small group of specialists with content-matter expertise reviewed the literature for new information since the guidelines were last published; they then proposed revised recommendations at a meeting held at NIH in June 2007. After these presentations and discussion, the revised guidelines were further reviewed by the co-editors; by the Office of AIDS Research, NIH; by specialists at CDC; and by HIVMA of IDSA before final approval and publication. The recommendations are rated by a letter that indicates the strength of the recommendation and a Roman numeral that indicates the quality of evidence supporting the recommendation, so that readers can ascertain how best to apply the recommendations in their practice environments. Major changes in the guidelines include 1) greater emphasis on the importance of antiretroviral therapy for the prevention and treatment of OIs, especially those OIs for which no specific therapy exists; 2) information regarding the diagnosis and management of immune reconstitution inflammatory syndromes; 3) information regarding the use of interferon-gamma release assays for the diagnosis of latent Mycobacterium tuberculosis (TB) infection; 4) updated information concerning drug interactions that affect the use of rifamycin drugs for prevention and treatment of TB; 5) the addition of a section on hepatitis B virus infection; and 6) the addition of malaria to the list of OIs that might be acquired during international travel. This report includes eleven tables pertinent to the prevention and treatment of OIs, a figure that pertains to the diagnois of tuberculosis, a figure that describes immunization recommendations, and an appendix that summarizes recommendations for prevention of exposure to opportunistic pathogens.
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              Seroprevalence and risk factors for Toxoplasmosis in HIV infected and non-infected individuals in Bahir Dar, Northwest Ethiopia

              Fisseha Walle, Nigatu Kebede, Aster Tsegaye … (2013)
              Background Toxoplasmosis, a zoonotic disease distributed worldwide, is an infection caused by the ubiquitous obligatory intracellular coccidian protozoan organism, Toxoplasma gondii. It is a major public health concern because the disease is serious in terms of mortality or physical and /or psychological sequellae in patients with HIV disease. The aim of the study was to assess the seroprevalence of Toxoplasma gondii IgG and IgM antibodies and associated risk factors in HIV infected and non-infected individuals attending Felege Hiwot referral hospital, Bahir Dar, Northwest Ethiopia. Methods A cross sectional study was conducted at Felege Hiwot referral hospital, Bahir Dar, Amhara National Regional State. Venous blood samples were collected from 103 HIV infected pre anti-retroviral therapy patients at Felege Hiwot referral hospital and 101 HIV negative apparently healthy voluntary blood donors at the blood bank. Serum samples were analyzed for anti-Toxoplasma gondii IgG and IgM antibodies using a commercially available ELISA kit. Socio-demographic and associated risk factors for Toxoplasmosis from each individual were also obtained and the data was analyzed using SPSS version 18. Results Of the examined HIV seropositive individuals, 87.4% (90/103) and 10.7% (11/103) were positive for anti-T. gondii IgG and IgM antibodies, respectively. Multivariate analysis using logistic regression showed that anti-T. gondii seropositivity was independently significantly associated with undercooked or raw meat consumption (adjusted OR=5.73, 95% CI=1.35-24.39; P=0.02) and having contact with cat (adjusted OR= 4.29, 95% CI=1.08-16.94; P=0.04) in HIV positive individuals. In HIV negative apparently healthy blood donors, prevalence of anti-T. gondii antibodies were 70.29% and 2.97% for IgG and IgM, respectively. Multivariate analysis showed that undercooked or raw meat consumption (adjusted OR=6.45, 95% CI=2.16-19.28; p=0.001) and sex (OR=6.79, 95% CI=2.14-21.60; p=0.001) were independently significantly associated with anti-T. gondii IgG seropositivity, with a significantly higher number of males affected than females. Conclusion The present findings showed a high sero-prevalence of anti-T. gondii antibodies in HIV infected pre-ART and HIV non-infected apparently healthy blood donors in Bahir Dar. Consumption of undercooked or raw meat might greatly contribute towards acquiring T. gondii infection in HIV infected pre-ART and HIV non-infected apparently healthy blood donors. It may be appropriate to include routine serological screening test for determination of anti-T. gondii antibodies in HIV infected pre-ART individuals and HIV negative apparently healthy blood donors. In addition, health education towards avoiding eating undercooked and raw meat, and avoiding contact with cats were recommended.
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                Author and article information

                Journal
                Journal ID (nlm-ta): Indian J Med Res
                Journal ID (iso-abbrev): Indian J Med Res
                Journal ID (publisher-id): IJMR
                Title: The Indian Journal of Medical Research
                Publisher: Wolters Kluwer - Medknow (India )
                ISSN (Print): 0971-5916
                ISSN (Electronic): 0975-9174
                Publication date (Print): November 2020
                Volume: 152
                Issue: 5
                Pages: 515-518
                Affiliations
                [1 ] Department of Microbiology, Apollo Hospitals, Navi Mumbai, Maharashtra, India
                [2 ] Department of Microbiology, Seth G.S. Medical College & K.E.M. Hospital, Mumbai, Maharashtra, India
                Author notes
                For correspondence: Dr Nayana Ingole, Department of Microbiology, 5 th Floor, New Building, Seth G.S. Medical College & K.E.M. Hospital, Parel, Mumbai 400 012, Maharashtra, India e-mail: nayanaingole@ 123456gmail.com
                Article
                Publisher ID: IJMR-152-515
                DOI: 10.4103/ijmr.IJMR_110_19
                PMC ID: 8157894
                PubMed ID: 33707394
                SO-VID: 6fd3da38-ec71-4044-866b-d7f06c546eae
                Copyright © Copyright: © 2021 Indian Journal of Medical Research
                License:

                This is an open access journal, and articles are distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as appropriate credit is given and the new creations are licensed under the identical terms.

                History
                Date received : 21 January 2019
                Categories
                Subject: Original Article

                ScienceOpen disciplines: Medicine
                Keywords: art,cd4 count,hiv,immunocompromised,seroprevalence,toxoplasma gondii,toxoplasmosis
                Data availability:
                ScienceOpen disciplines: Medicine
                Keywords: art, cd4 count, hiv, immunocompromised, seroprevalence, toxoplasma gondii, toxoplasmosis

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