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Dive into the research topics where Joseph Kwong-Leung Yu is active.

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Featured researches published by Joseph Kwong-Leung Yu.


Tropical Medicine & International Health | 2008

Increased mortality of male adults with AIDS related to poor compliance to antiretroviral therapy in Malawi

Solomon Chih-Cheng Chen; Joseph Kwong-Leung Yu; Anthony D. Harries; Chin-Nam Bong; Rose Kolola-Dzimadzi; Teck-Siang Tok; Chwan-Chuen King; Jung-Der Wang

Objective  To investigate the effect of gender on mortality of HIV‐infected adults receiving antiretroviral therapy (ART) and its possible reasons.


AIDS | 2007

Risk factors for early mortality in children on adult fixed-dose combination antiretroviral treatment in a central hospital in Malawi.

Chin-Nam Bong; Joseph Kwong-Leung Yu; Hung-Che Chiang; Wen-Ling Huang; Tsung-Che Hsieh; Erik J Schouten; Simon D. Makombe; Kelita Kamoto; Anthony D. Harries

Objectives:In children aged less than 15 years, to determine the cumulative proportion of deaths occurring within 3 and 6 months of starting split-tablet adult fixed-dose combination antiretroviral therapy (ART) and to identify risk factors associated with early deaths. Design:A retrospective cohort analysis. Methods:Data were collected and analysed from ART patient master cards and the ART register of all children registered for treatment between July 2004 and September 2006 in the ART clinic at Mzuzu Central Hospital, northern Malawi. Results:A total of 439 children started on ART, of whom 220 (50%) were male; 37 (8%) were aged less than 18 months, 172 (39%) 18 months to 5 years, and 230 (52%) were 6–14 years. By September 2006, 49 children (11%) had died, of whom 35 (71%) died by 3 months and 44 (89%) by 6 months. The cumulative incidence of death at 3, 6, 12 and 24 months after ART was 8, 12, 13 and 15%, respectively. After multivariate analysis, being in World Health Organization clinical stage 4, having severe wasting and severe immunodeficiency were factors significantly associated with 3-month mortality and 6-month mortality, respectively. Conclusion:Although children do well on ART, there is high early mortality. Scaling up HIV testing and simple diagnostic tests for infants and children, expanding routine provision of cotrimoxazole prophylaxis, and investigating the role of nutritional interventions are three measures that, if implemented and expanded countrywide, may improve ART outcomes.


Bulletin of The World Health Organization | 2007

A national survey of the impact of rapid scale-up of antiretroviral therapy on health-care workers in Malawi: effects on human resources and survival

Simon D. Makombe; Andreas Jahn; Hannock Tweya; Stuart Chuka; Joseph Kwong-Leung Yu; Mindy Hochgesang; John Aberle-Grasse; Olesi Pasulani; Erik J Schouten; Kelita Kamoto; Anthony D. Harries

OBJECTIVE To assess the human resources impact of Malawis rapidly growing antiretroviral therapy (ART) programme and balance this against the survival benefit of health-care workers who have accessed ART themselves. METHODS We conducted a national cross-sectional survey of the human resource allocation in all public-sector health facilities providing ART in mid-2006. We also undertook a survival analysis of health-care workers who had accessed ART in public and private facilities by 30 June 2006, using data from the national ART monitoring and evaluation system. FINDINGS By 30 June 2006, 59 581 patients had accessed ART from 95 public and 28 private facilities. The public sites provided ART services on 2.4 days per week on average, requiring 7% of the clinician workforce, 3% of the nursing workforce and 24% of the ward clerk workforce available at the facilities. We identified 1024 health-care workers in the national ART-patient cohort (2% of all ART patients). The probabilities for survival on ART at 6 months, 12 months and 18 months were 85%, 81% and 78%, respectively. An estimated 250 health-care workers lives were saved 12 months after ART initiation. Their combined work-time of more than 1000 staff-days per week was equivalent to the human resources required to provide ART at the national level. CONCLUSION A large number of ART patients in Malawi are managed by a small proportion of the health-care workforce. Many health-care workers have accessed ART with good treatment outcomes. Currently, staffing required for ART balances against health-care workers lives saved through treatment, although this may change in the future.


Bulletin of The World Health Organization | 2007

Malawi's contribution to "3 by 5": achievements and challenges

Edwin Libamba; Simon D. Makombe; Anthony D. Harries; Erik J Schouten; Joseph Kwong-Leung Yu; Olesi Pasulani; Eustice Mhango; John Aberle-Grasse; Mindy Hochgesang; Eddie Limbambala; Douglas Lungu

PROBLEM Many resource-poor countries have started scaling up antiretroviral therapy (ART). While reports from individual clinics point to successful implementation, there is limited information about progress in government institutions at a national level. APPROACH Malawi started national ART scale-up in 2004 using a structured approach. There is a focus on one generic, fixed-dose combination treatment with stavudine, lamivudine and nevirapine. Treatment is delivered free of charge to eligible patients with HIV and there is a standardized system for recruiting patients, monthly follow-up, registration, monitoring and reporting of cases and outcomes. All treatment sites receive quarterly supervision and evaluation. LOCAL SETTING In January 2004, there were nine public sector facilities delivering ART to an estimated 4 000 patients. By December 2005, there were 60 public sector facilities providing free ART to 37,840 patients using national standardized systems. Analysis of quarterly cohort treatment outcomes at 12 months showed 80% of patients were alive, 10% dead, 9% lost to follow-up and 1% had stopped treatment. LESSONS LEARNED Achievements were the result of clear national ART guidelines, implementing partners working together, an intensive training schedule focused on clinical officers and nurses, a structured system of accrediting facilities for ART delivery, quarterly supervision and monitoring, and no stock-outs of antiretroviral drugs. The main challenges are to increase the numbers of children, pregnant women and patients with tuberculosis being started on ART, and to avert high early mortality and losses to follow-up. The capacity of the health sector to cope with escalating case loads and to scale up prevention alongside treatment will determine the future success of ART delivery in Malawi.


Tropical Doctor | 2008

Outcomes of patients with Kaposi's sarcoma who start antiretroviral therapy under routine programme conditions in Malawi

Simon D. Makombe; Anthony D. Harries; Joseph Kwong-Leung Yu; Mindy Hochgesang; Eustice Mhango; Ralf Weigel; Olesi Pasulani; Margaret Fitzgerald; Erik J Schouten; Edwin Libamba

AIDS-associated Kaposis sarcoma (KS) is the most common AIDS-related malignancy in sub-Saharan Africa, with a generally unfavourable prognosis. We report on six-month and 12-month cohort treatment outcomes of human immunodeficiency virus (HIV)-positive KS patients and HIV-positive non-KS patients treated with antiretroviral therapy (ART) in public sector facilities in Malawi. Data were collected from standardized antiretroviral (ARV) patient master cards and ARV patient registers. Between July and September 2005, 7905 patients started ART-488 (6%) with a diagnosis of KS and 7417 with a non-KS diagnosis. Between January and March 2005, 4580 patients started ART-326 (7%) with a diagnosis of KS and 4254 with a non-KS diagnosis. At six-months and 12-months, significantly fewer KS patients were alive and significantly more had died or defaulted compared to non-KS patients. HIV-positive KS patients on ART in Malawi have worse outcomes than other patients on ART. Methods designed to improve these outcomes must be found.


PLOS ONE | 2007

A National Survey of Teachers on Antiretroviral Therapy in Malawi: Access, Retention in Therapy and Survival

Simon D. Makombe; Andreas Jahn; Hannock Tweya; Stuart Chuka; Joseph Kwong-Leung Yu; Mindy Hochgesang; John Aberle-Grasse; Lameck Thambo; Erik J Schouten; Kelita Kamoto; Anthony D. Harries

Background HIV/AIDS is having a devastating effect on the education sector in sub-Saharan Africa. A national survey was conducted in all public sector and private sector facilities in Malawi providing antiretroviral therapy (ART) to determine the uptake of ART by teachers and their outcomes while on treatment. Methodology/Principal Findings A retrospective cohort study was carried out based on patient follow-up records from ART Registers and treatment master cards in all 138 ART clinics in Malawi; observations were censored on September 30th 2006. By this date, Malawis 102 public sector and 36 private sector ART clinics had registered a total of 72,328 patients for treatment. Of these, 2,643 (3.7%) were teachers. Adjusting for double-registration caused by clinic transfers, it is estimated that 2,380 individual teachers had ever accessed ART. There were 15% of teachers starting ART in WHO clinical stage 1 or 2 with a CD4-lymphocyte count of ≤250/mm3 and 85% starting in stage 3 or 4. By 30th September 2006, 1,850 teachers were alive on ART (3.5% of all teachers in Malawi). The probability of being alive on ART at 6-months, 12-months, 18-months and 24-months after treatment initiation was 84%, 79%, 75% and 73% respectively. Retention in treatment was better for women (adjusted HR = 1.8) and in those starting ART in WHO Clinical Stage 1 and 2 (adjusted HR = 1.8). Conclusion/Significance Rapid scale up of ART has allowed 2,380 HIV-positive teachers to access life-prolonging treatment. There is evidence that this intervention can help to mitigate some of the shortages of teaching personnel in resource-poor countries affected by a generalised HIV epidemic.


PLOS ONE | 2008

What Happens to Patients on Antiretroviral Therapy Who Transfer Out to Another Facility

Joseph Kwong-Leung Yu; Teck Siang Tok; Jih Jin Tsai; Wu Shou Chang; Rose K. Dzimadzi; Ping Hsiang Yen; Simon D. Makombe; Amon Nkhata; Erik J Schouten; Kelita Kamoto; Anthony D. Harries

Background Long term retention of patients on antiretroviral therapy (ART) in Africas rapidly expanding programmes is said to be 60% at 2 years. Many reports from African ART programmes make little mention of patients who are transferred out to another facility, yet Malawis national figures show a transfer out of 9%. There is no published information about what happens to patients who transfer-out, but this is important because if they transfer-in and stay alive in these other facilities then national retention figures will be better than previously reported. Methodology/Principal Findings Of all patients started on ART over a three year period in Mzuzu Central Hospital, North Region, Malawi, those who transferred out were identified from the ART register and master cards. Clinic staff attempted to trace these patients to determine whether they had transferred in to a new ART facility and their outcome status. There were 805 patients (19% of the total cohort) who transferred out, of whom 737 (92%) were traced as having transferred in to a new ART facility, with a median time of 1.3 months between transferring-out and transferring-in. Survival probability was superior and deaths were lower in the transfer-out patients compared with those who did not transfer. Conclusion/Significance In Mzuzu Central Hospital, patients who transfer-out constitute a large proportion of patients not retained on ART at their original clinic of registration. Good documentation of transfer-outs and transfer-ins are needed to keep track of national outcomes. Furthermore, the current practice of regarding transfer-outs as being double counted in national cohorts and subtracting this number from the total national registrations to get the number of new patients started on ART is correct.


PLOS ONE | 2008

Antiretroviral Therapy in the Malawi Defence Force: Access, Treatment Outcomes and Impact on Mortality

Alfred C. Banda; Simon D. Makombe; Andreas Jahn; Hannock Tweya; Stuart Chuka; Joseph Kwong-Leung Yu; Bethany L. Hedt; Ralf Weigel; Amon Nkhata; Erik J Schouten; Kelita Kamoto; Anthony D. Harries

Background HIV/AIDS affects all sectors of the population and the defence forces are not exempt. A national survey was conducted in all public and private sectors in Malawi that provide antiretroviral therapy (ART) to determine the uptake of ART by army personnel, their outcomes while on treatment, and the impact of ART on mortality in the Malawi Defence Force. Methodology/Principal Findings A retrospective cohort analysis was carried out, collecting data on access and retention on treatment from all 103 public and 38 private sector ART clinics in Malawi, using standardised patient master cards and clinic registers. Observations were censored on December 31st 2006. Independent data on mortality trends in army personnel from all causes between 2002 and 2006 were available from army records. By December 31st 2006, there were 85,168 patients ever started on ART in both public and private sectors, of whom 547 (0.7%) were army personnel. Of these, 22% started ART in WHO clinical stage 1 or 2 with a CD4-lymphocyte count of ≤250/mm3 and 78% started in stage 3 or 4. Treatment outcomes of army personnel by December 31st 2006 were:−365 (67%) alive and on ART at their registration facility, 98 (18%) transferred out to another facility, 71 (13%) dead, 9 (2%) lost to follow-up, and 4 (<1%) stopped treatment. The probability of being alive on ART at 6-, 12- and 18-months was 89.8%, 83.4% and 78.8% respectively. All-cause mortality in army personnel declined dramatically over the five year period from 2002–2006. Conclusion/Significance There has been a good access of army personnel to ART during the last five years with excellent outcomes, and this should serve as an example for other defence forces and large companies in the region.


Journal of Midwifery & Women's Health | 2011

Applying the global positioning system and google earth to evaluate the accessibility of birth services for pregnant women in northern Malawi.

Solomon Chih-Cheng Chen; Jung-Der Wang; Joseph Kwong-Leung Yu; Tzu‐Yi Chiang Rn; Chang-Chuan Chan; Hsiu‐Hung Wang Rn; Yohane Nyasulu; Rose Kolola-Dzimadzi

INTRODUCTION The objective of this study was to validate the combined use of the Global Positioning System (GPS) and Google Earth for measuring the accessibility of health care facilities for pregnant women in northern Malawi. METHODS We used GPS and Google Earth to identify 5 major health care facilities in Mzuzu (Malawi) and the homes of 79 traditional birth attendants (TBAs). The distance and time required for each TBA to reach the nearest health care facility were measured by both GPS and by self-report of the TBAs. A convenience sample of 1138 pregnant women was interviewed about their choices of birth sites for current and previous pregnancies and the time and cost required to access health care facilities. RESULTS The correlation coefficient between the objective measurements by GPS and subjective reports by TBAs for time required from their homes to health care facilities was 0.654 (P < .001). Among pregnant women, 45.6% reported that they could reach a health care facility within 2 hours; 23.8% reported paying more than


Midwifery | 2011

The effectiveness of continuing training for traditional birth attendants on their reproductive health-care knowledge and performance.

Solomon Chih-Cheng Chen; Jung-Der Wang; Aimee Lou Ward; Chang-Chuan Chan; Pau-Chung Chen; Hung-Che Chiang; Rose Kolola-Dzimadzi; Yohane Nyasulu; Joseph Kwong-Leung Yu

1 for transportation to health care facilities. For the current study, 82.6% of women intended to give birth at a health care facility. However, only 48.7% of women actually gave birth in a health care facility in a previous pregnancy, and 32.6% were assisted by TBAs. DISCUSSION Combined GPS and Google Earth can be useful in the evaluation of accessibility of health care facilities, especially for emergency obstetric care.

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Anthony D. Harries

International Union Against Tuberculosis and Lung Disease

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Mindy Hochgesang

Centers for Disease Control and Prevention

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John Aberle-Grasse

Centers for Disease Control and Prevention

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Olesi Pasulani

Médecins Sans Frontières

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Andreas Jahn

Kamuzu Central Hospital

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Hannock Tweya

International Union Against Tuberculosis and Lung Disease

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Ralf Weigel

Liverpool School of Tropical Medicine

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