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1.
Malar J ; 19(1): 253, 2020 Jul 14.
Article in English | MEDLINE | ID: mdl-32664942

ABSTRACT

BACKGROUND: Plasmodium vivax resistance to chloroquine (CQ) has been reported from many endemic regions in the world. Plasmodium vivax is responsible for 95% of malaria cases in Afghanistan and CQ is the first-line treatment given for vivax malaria. The pvmdr-1 and pvcrt-o (K10 insertion) genes are possible markers for CQ-resistance in P. vivax isolates. There have been no studies done on the presence or absence of molecular markers for CQ-resistance P. vivax in Afghanistan. The present work aimed to evaluate the frequency of mutations in the pvmdr-1 and K10 insertion in the pvcrt-o genes of P. vivax. METHODS: Plasmodium vivax isolates were collected from Laghman, Baghlan and Khost provinces. For investigation of polymorphisms of desired regions in pvmdr-1 and pvcrt-o genes, sequencing was applied on the PCR products. A new asymmetric qPCR and melting analysis assay based on unlabelled probe developed for scanning of K10 insertion in pvcrt-o gene. RESULTS: The analysis of sequencing data of the pvmdr-1 gene showed wild type Y976 and K997 and mutant M958 and L1076 in 33 isolates from three provinces. Of the 36 samples evaluated for K10 insertion in pvcrt-o, 2/18(11%), 0/10(0%) and 0/8(0%) isolates from Laghman, Baghlan and Khost province, respectively, possessed K10 insertion, confirmed by either sequencing and unlabelled probes. CONCLUSION: Two samples with K10 insertion and 33 samples with pvmdr1 polymorphism, indicating on the possibility of CQ resistance in P. vivax populations in Afghanistan. Furthermore, unlabelled probes are simple and inexpensive alternative tools for screening of P. vivax mutations.


Subject(s)
Antimalarials/pharmacology , Chloroquine/pharmacology , Drug Resistance , Plasmodium vivax/genetics , Polymerase Chain Reaction/methods , Afghanistan , Genetic Markers/genetics , Malaria, Vivax/parasitology , Real-Time Polymerase Chain Reaction/methods
2.
Hum Resour Health ; 18(1): 48, 2020 07 08.
Article in English | MEDLINE | ID: mdl-32641067

ABSTRACT

BACKGROUND: Despite the large investments in donor-related health activities in areas of the globe prone to tension and conflict, few studies have examined in detail the role of these donor investments in human resources for health (HRH). METHODS: We used a mixed-methods research methodology comprising both quantitative and qualitative analyses to analyze the Enhanced Financial Reporting System of the Global Fund to Fight AIDS, Tuberculosis and Malaria budget and expenditure data from 2003 to 2017 for 13 countries in the Eastern Mediterranean Region (EMR). We analyzed additional detailed budgetary data over the period 2015-2017 for a sub-set of these countries. Two country-case studies were conducted in Afghanistan and Sudan for a more in-depth understanding of the HRH-related activities that occurred as a result of Global Fund grants. RESULTS: The results show that US$2.2 billion Global Fund dollars had been budgeted and US$1.6 billion were expended over the period 2003-2017 in 13 Eastern Mediterranean countries. The average expenditures for human resources for health (training and human resources) as a percentage of total expenditure are 28%. Additional detailed budgetary data analysis shows a more conservative investment in HRH with 13% of total budgets allocated to "direct" HRH activities such as salaries, training costs, and technical assistance. HRH-related activities supported by the Global Fund in Afghanistan and Sudan were similar, including pre-service and in-services training, hiring of program coordinators and staff, and top-ups for clinical staff. CONCLUSIONS: HRH remains a key issue in strengthening the health systems of low- and middle-income countries. While this study suggests that Global Fund's HRH investments in the EMR are not lagging behind the global average, there appears to be a need to further scale up these investments considering this region's unique HRH challenges.


Subject(s)
Budgets/statistics & numerical data , Financing, Organized/statistics & numerical data , International Cooperation , Workforce/economics , Workforce/statistics & numerical data , Africa, Northern , Humans , Middle East
5.
East Mediterr Health J ; 24(9): 951-958, 2018 Dec 09.
Article in English | MEDLINE | ID: mdl-30570128

ABSTRACT

BACKGROUND: Afghanistan has the second lowest health workforce density and the highest level of rural residing population in the Eastern Mediterranean Region. Ongoing insecurity, cultural, socio-economic and regulatory barriers have also contributed to gender and geographic imbalances. Afghanistan has introduced a number of interventions to tackle its health worker shortage and maldistribution. AIMS: This review provides an overview of interventions introduced to address the critical shortage and maldistribution of health workers in rural and remote Afghanistan. METHODS: A review of literature (including published peer-reviewed, grey literature, and national and international technical reports and documents) was conducted. RESULTS: The attraction and retention of health workforce in rural and remote areas require using a bundle of interventions to overcome these complex multidimensional challenges. Afghanistan expanded training institutions in remote provinces and introduced new cadres of community-based health practitioners. Targeted recruitment and deployment to rural areas, financial incentives and family support were other cited approaches. These interventions have increased the availability of health workers in rural areas, resulting in improved service delivery and health outcomes. Despite these efforts, challenges still persist including: limited female health worker mobility, retention of volunteer community-based health workforce, competition from the private sector and challenges of expanding scopes of practice of new cadres. CONCLUSIONS: Afghanistan made notable progress but must continue its efforts in addressing its critical health worker shortage and maldistribution through the production, deployment and retention of a "fit-for-purpose" gender-balanced, rural workforce with adequate skill mix. Limited literature inhibits evaluating progress and further studies are needed.


Subject(s)
Health Workforce , Medically Underserved Area , Afghanistan , Health Workforce/statistics & numerical data , Humans , Resource Allocation , Rural Health Services/organization & administration , Rural Health Services/statistics & numerical data
7.
BMC Public Health ; 17(1): 290, 2017 04 04.
Article in English | MEDLINE | ID: mdl-28376806

ABSTRACT

BACKGROUND: Despite progress in recent years, Afghanistan is lagging behind in realizing the full potential of immunization. The country is still endemic for polio transmission and measles outbreaks continue to occur. In spite of significant reductions over the past decade, the mortality rate of children under 5 years of age continues to remain high at 91 per 1000 live births. METHODS: The study was a descriptive community-based cross sectional household survey. The survey aimed to estimate the levels of immunization coverage at national and province levels. Specific objectives are to: establish valid baseline information to monitor progress of the immunization program; identify reasons why children are not immunized; and make recommendations to enhance access and quality of immunization services in Afghanistan. The survey was carried out in all 34 provinces of the country, with a sample of 6125 mothers of children aged 12-23 months. RESULTS: Nationally, 51% of children participating in the survey received all doses of each antigen irrespective of the recommended date of immunization or recommended interval between doses. About 31% of children were found to be partially vaccinated. Reasons for partial vaccination included: place to vaccinate child too far (23%), not aware of the need of vaccination (17%), no faith in vaccination (16%), mother was too busy (15%), and fear of side effects (11%). CONCLUSION: The innovative mechanism of contracting out delivery of primary health care services in Afghanistan, including immunization, to non-governmental organizations is showing some positive results in quickly increasing coverage of essential interventions, including routine immunization. Much ground still needs to be covered with proper planning and management of resources in order to improve the immunization coverage in Afghanistan and increase survival and health status of its children.


Subject(s)
Health Knowledge, Attitudes, Practice , Vaccination/statistics & numerical data , Afghanistan , Cross-Sectional Studies , Female , Humans , Immunization Programs/statistics & numerical data , Immunization Schedule , Infant , Male , Residence Characteristics
8.
Int J Qual Health Care ; 29(1): 55-62, 2017 Feb 01.
Article in English | MEDLINE | ID: mdl-27836999

ABSTRACT

OBJECTIVE: To assess quality of the national Integrated Management of Childhood Illness (IMCI) program services provided for sick children at primary health facilities in Afghanistan. DESIGN: Mixed methods including cross-sectional study. SETTING: Thirteen (of thirty-four) provinces in Afghanistan. PARTICIPANTS: Observation of case management and re-examination of 177 sick children, exit interviews with caretakers and review of equipment/supplies at 44 health facilities. INTERVENTION: Introduction and scale up of Integrated Management of Childhood Illnesses at primary health care facilities. MAIN OUTCOME MEASURES: Care of sick children according to IMCI guidelines, health worker skills and essential health system elements. RESULTS: Thirty-two (71%) of the health workers were trained in IMCI and five (11%) received supervision in clinical case management during the past 6 months. On average, 5.4 out of 10 main assessment tasks were performed during cases observed, the index being higher in children seen by trained providers than untrained (6.3 vs 3.5, 95% CI 5.8-6.8 vs 2.9-4.1). In all, 74% of the 104 children who needed oral antibiotics received prescriptions, while 30% received complete and correct advice and 30% were overprescribed, and more so by untrained providers. Home care counseling was associated with provider training status (41.3% by trained and 24.5% by untrained). Essential oral and pre-referral injectable medicine and equipment/supplies were available in 66%, 23%, and 45% of health facilities, respectively. CONCLUSION: IMCI training improved assessment, rational use of antibiotics and counseling; further investment in IMCI in Afghanistan, continuing provider capacity building and supportive supervision for improved quality of care and counseling for sick children is needed, especially given high burden treatable childhood illness.


Subject(s)
Case Management/organization & administration , Child Health Services/organization & administration , Afghanistan , Anti-Bacterial Agents/administration & dosage , Child, Preschool , Counseling/statistics & numerical data , Female , Health Personnel/education , Humans , Inappropriate Prescribing/statistics & numerical data , Infant , Male , Primary Health Care/organization & administration , Quality of Health Care/statistics & numerical data
9.
Vaccine ; 42(8): 2059-2064, 2024 Mar 19.
Article in English | MEDLINE | ID: mdl-38413278

ABSTRACT

BACKGROUND: In January 2018, Afghanistan introduced the monovalent oral rotavirus vaccine (Rotarix) nationwide, administered as a 2-dose series at six and ten weeks of age. We describe characteristics of intussusception cases and assess potential intussusception risk associated with Rotarix vaccination in Afghan infants. METHODS: Multi-center prospective active hospital-based surveillance for intussusception was conducted from May 2018 to March 2022 in four sentinel sites in Afghanistan. We applied the Brighton Level 1 criteria for intussusception and verified vaccination status by reviewing vaccine cards. We used the self-controlled case series (SCCS) methodology to compare intussusception incidence in the 1 to 21 days after each dose of Rotarix vaccination against non-risk periods. RESULTS: A total of 468 intussusception cases were identified in infants under 12 months, with 264 cases aged between 28 and 245 days having confirmed vaccination status contributing to the SCCS analysis. Most case-patients (98 %) required surgery for treatment, and over half (59 %) of those who underwent surgery required intestinal resection. Nineteen (7 %) case-patients died. Eighty-six percent of case-patients received the first dose of Rotarix, and 69 % received the second dose before intussusception symptom onset. There was no increased risk of intussusception in the 1-7 days (relative incidence: 0.9, 95 % CI: 0.1, 7.5), 8-21 days (1.3, 95 % CI: 0.4, 4.2), or 1-21 days (1.1, 95 % CI: 0.4, 3.4) following receipt of the first dose or in the 1-7 days (0.2, 95 % CI: 0.3, 1.8), 8-21 days (0.7, 95 % CI: 0.3, 1.5), or 1-21 days (0.6, 95 % CI: 0.3, 1.2) following the second dose. CONCLUSION: Rotarix vaccination was not associated with an increased intussusception risk, supporting its continued use in Afghanistan's immunization program. However, there was a high level of death and resection due to intussusception among Afghan infants.


Subject(s)
Intussusception , Rotavirus Infections , Rotavirus Vaccines , Infant , Humans , Rotavirus Vaccines/adverse effects , Intussusception/chemically induced , Intussusception/epidemiology , Afghanistan/epidemiology , Prospective Studies , Vaccines, Attenuated/adverse effects , Vaccination/adverse effects , Product Surveillance, Postmarketing , Rotavirus Infections/epidemiology , Rotavirus Infections/prevention & control , Rotavirus Infections/complications
10.
Chronic Dis Transl Med ; 9(3): 210-221, 2023 Sep.
Article in English | MEDLINE | ID: mdl-37711869

ABSTRACT

Background: Afghanistan is suffering from 40-year chronic conflicts, displacement, and demolition of its infrastructure. Afghanistan mortality survey 2010 shows nearly 46% of all deaths in the country were attributed to noncommunicable diseases (NCDs). In this study, we aimed to understand the differences in mortality and premature death due to NCDs by sex and the trend for the next 8 years. Methods: We applied trend analysis using the secondary data from the Institute for Health Metrics and Evaluation, Global Burden of Diseases 2019. The information on NCD mortality, NCD deaths attributed to its risk factors, NCD percent of total years lived with disability (YLDs) attribution to each risk factor extracted from this database from 2008 to 2019. We investigated the trend from 2008 to 2019 for the mentioned factors and then forecast their trends until 2030. Results: Our study shows that Afghanistan has had an increasing death number due to NCDs from 2008 to 2019 (50% for both sexes) and this will reach nearly 54% by 2030. Currently, half of NCDs deaths are premature in Afghanistan. The mortality rate and prevalence of risk factors are higher among women. More than 70% of YLDs will be due to NCDs in Afghanistan till 2030. Five risk factors including high systolic blood pressure (28.3%), high body mass index (23.4%), high blood glucose (20.6%), high low-density lipoprotein cholesterol (16.3%), and smoking (12.3%) will have the highest contribution to NCDs death in 2030, respectively. Conclusions: In general, our study indicates that without any specific intervention to address NCDs in Afghanistan, not only the Sustainable Development Goal target for NCDs will not be met, but an increase in almost all risk factors prevalence, as well as NCD mortality, will be seen in Afghanistan.

11.
Front Public Health ; 11: 982416, 2023.
Article in English | MEDLINE | ID: mdl-36908476

ABSTRACT

Non-communicable diseases (NCDs) and their risk factors are the leading cause of death worldwide and contribute to 74.3% of deaths globally in 2019. The burden of NCDs is escalating in Afghanistan. Currently, every seconds, people in Afghanistan are dying of NCDs. Addressing this challenge in Afghanistan needs effective and practical interventions. This study aimed to identify the strategies developed and implemented in countries with low non-communicable premature death. To conduct a scoping review, we followed the six-step Arksey and O'Malley protocol and searched for eligible articles on eight international databases and the gray literature. The study followed the Preferred Reporting Items for Systematic review and Meta-Analysis (PRISMA) guidelines. The inclusion criteria were English documents and evidence produced up to 30 November 2021 for the control of NCDs. We excluded incomplete texts, duplicates, and dissertations due to lack of access. We used EndNote X9 and MaxQDA software for data management and analysis. We conducted content analysis for this study. A total of 122 documents developed between 1984 and 2021 met the inclusion criteria. We identified 35 strategies from which the most used strategies were related to unhealthy diets and smoking cessation programs. Canada (26.4%), Korea (19.8%), and the United Kingdom (19%) have the most publications on the control and prevention of NCDs among the countries included in the study. Most strategies were implemented over 2 years (41%). This study recommends specific interventions to control and prevent NCDs for the main risk factors of tobacco use, unhealthy diet, physical inactivity, and the main non-communicable diseases such as heart diseases, cancers, diabetes, and chronic obstructive pulmonary diseases. Afghanistan Ministry of Public Health, the WHO country office, and other involved stakeholders can use the findings of this review to design and implement strategies for controlling and preventing NCDs in Afghanistan. International organizations such as the World Health Organization, United Nations Agencies, the World Bank, and other involving communities should invest in strengthening good health governance in Afghanistan. The Afghan Government should focus on promoting and funding health literacy among the public and self-care to control and prevent NCDs.


Subject(s)
Diabetes Mellitus , Noncommunicable Diseases , Humans , Afghanistan , Delivery of Health Care , Risk Factors
12.
East Mediterr Health J ; 29(2): 119-125, 2023 Feb 26.
Article in English | MEDLINE | ID: mdl-36880493

ABSTRACT

Background: The Afghanistan Reconstruction Trust Fund, managed by the World Bank through a contracted-out instrument called Sehatmandi, financed health service delivery in Afghanistan, with substantial achievements in infant, child and maternal health. After the collapse of the Afghan Government on 15 August 2021, the health system has been on the brink of collapse. Aims: We assessed the use of basic health services and estimated excess mortality resulting from the interruption to healthcare funding. Methods: We conducted a cross-sectional study that compared health services utilization from June to September for 3 consecutive years, 2019, 2020 and 2021, using 11 output indicators reported by the health management and information system. We used the Lives Saved Tool, a linear mathematical model with input data from the Afghanistan Demographic Health Survey 2015, to calculate the additional maternal, neonatal and child mortality at 25%, 50%, 75% and 95% reduction in health coverage. Results: During August and September 2021, after the announced ban on financing, health service utilization decreased to a range of 7-59%. Family planning, major surgeries and postnatal care showed the greatest decreases. Uptake of child immunization showed one-third decrease. Sehatmandi provides around 75% of primary and secondary health services: pausing funds to this programme will result in additional 2862 maternal deaths, 15 741 neonatal deaths, 30 519 child deaths, and 4057 stillbirths. Conclusion: Sustaining the current level of health services delivery is crucial to avoid excess, preventable morbidity and mortality in Afghanistan.


Subject(s)
Child Mortality , Delivery of Health Care , Government Programs , Healthcare Financing , Child , Humans , Infant , Infant, Newborn , Afghanistan/epidemiology , Cross-Sectional Studies , Family , Delivery of Health Care/economics
13.
East Mediterr Health J ; 29(3): 177-185, 2023 Mar 26.
Article in English | MEDLINE | ID: mdl-36987623

ABSTRACT

Background: Despite large-scale investment in health service delivery outsourcing, few studies have examined human resources for health (HRH) in Afghanistan. Aims: To review the HRH situation of outsourced healthcare services in Afghanistan and evaluate nongovernment organization (NGO) investments in the health workforce. Methods: Two questionnaires were used for data collection. One gathered information about the characteristics of HRH in 2020 and the other collected budgetary data for 2017-2020 to analyse budget allocation and expenditure by NGOs on the health workforce. Results: A total of 25 262 (65% male, 35% female) individuals were employed by NGOs in 31 provinces of Afghanistan. There was a critical shortage of personnel and a prevalence of gender imbalance across all provinces. Healthcare workers were mostly aged 26 to 30 years. Services were mostly provided by local NGOs and their scopes were not limited to outsourced projects. More than 75% of the budget of NGOs was allocated to the health workforce in 2017-2020, and more than 70% of allocations was spent on staff salaries, followed by other health workforce expenditure. Less than 5% was spent on capacity building. Conclusion: There is a gross shortage and large gender imbalance in the Afghanistan health workforce. It is essential to maintain and increase current financial and technical investments to ensure sustainability and enhance the fragile health system in Afghanistan.


Subject(s)
Health Services , Health Workforce , Male , Humans , Female , Afghanistan , Workforce , Health Personnel
14.
BMJ Glob Health ; 8(Suppl 1)2023 01.
Article in English | MEDLINE | ID: mdl-36657808

ABSTRACT

This paper reviews the experience of six low-income and lower middle-income countries in setting their own essential packages of health services (EPHS), with the purpose of identifying the key requirements for the successful design and transition to implementation of the packages in the context of accelerating progress towards universal health coverage (UHC). The analysis is based on input from three meetings of a knowledge network established by the Disease Control Priorities 3 Country Translation Project and working groups, supplemented by a survey of participating countries.All countries endorsed the Sustainable Development Goals target 3.8 on UHC for achievement by 2030. The assessment of country experiences found that health system strengthening and mobilising and sustaining health financing are major challenges. EPHS implementation is more likely when health system gaps are addressed and when there are realistic and sustainable financing prospects. However, health system assessments were inadequate and the government planning and finance sectors were not consistently engaged in setting the EPHS in most of the countries studied. There was also a need for greater engagement with community and civil society representatives, academia and the private sector in package design. Leadership and reinforcement of technical and managerial capacity are critical in the transition from EPHS design to sustained implementation, as are strong human resources and country ownership of the process. Political commitment beyond the health sector is key, particularly commitment from parliamentarians and policymakers in the planning and finance sectors. National ownership, institutionalisation of technical and managerial capacity and reinforcing human resources are critical for success.The review concludes that four prerequisites are crucial for a successful EPHS: (1) sustained high-level commitment, (2) sustainable financing, (3) health system readiness, and (4) institutionalisation.


Subject(s)
Health Services , Private Sector , Humans , Government Programs , Sustainable Development , Poverty
15.
BMJ Glob Health ; 8(9)2023 09.
Article in English | MEDLINE | ID: mdl-37775105

ABSTRACT

In 2017, in the middle of the armed conflict with the Taliban, the Ministry of Public Health decided that the Afghan health system needed a well-defined priority package of health services taking into account the increasing burden of non-communicable diseases and injuries and benefiting from the latest evidence published by DCP3. This leads to a 2-year process involving data analysis, modelling and national consultations, which produce this Integrated Package of Essential health Services (IPEHS). The IPEHS was finalised just before the takeover by the Taliban and could not be implemented. The Afghanistan experience has highlighted the need to address not only the content of a more comprehensive benefit package, but also its implementation and financing. The IPEHS could be used as a basis to help professionals and the new authorities to define their priorities.


Subject(s)
Health Services , Public Health , Humans , Afghanistan
16.
Vaccine ; 41(48): 7220-7225, 2023 11 22.
Article in English | MEDLINE | ID: mdl-37884416

ABSTRACT

Rotavirus vaccines have substantially decreased rotavirus hospitalizations in countries where they have been implemented. In some high- and middle-income countries, a low-level of increased risk of intussusception, a type of acute bowel obstruction, has been detected following rotavirus vaccination. However, no increased risk of intussusception was found in India, South Africa, or a network of 7 other African countries. We assessed the association between a 2-dose monovalent rotavirus vaccine (Rotarix) and intussusception in 3 early-adopter low-income Asian countries -- Afghanistan, Myanmar, and Pakistan. Children <12 months of age admitted to a sentinel surveillance hospital with Brighton level 1 intussusception were eligible for enrollment. We collected information about each child's vaccination status and used the self-controlled case series method to calculate the relative incidence of intussusception 1-7 days, 8-21 days, and 1-21 days following each dose of vaccine and derived confidence intervals with bootstrapping. Of the 585 children meeting the analytic criteria, the median age at intussusception symptom onset was 24 weeks (IQR: 19-29). Overall, 494 (84 %) children received the first Rotarix dose and 398 (68 %) received the second dose. There was no increased intussusception risk during any of the risk periods following the first (1-7 days: 1.01 (95 %CI: 0.39, 2.60); 8-21 days: 1.37 (95 %CI: 0.81, 2.32); 1-21 days: 1.28 (95 %CI: 0.78, 2.11)) or second (1-7 days: 0.81 (95 %CI: 0.42, 1.54); 8-21 days: 0.77 (95 %CI: 0.53, 1.16); 1-21 days: 0.78 (95 %CI: 0.53, 1.16)) rotavirus vaccine dose. Our findings are consistent with other data showing no increased intussusception risk with rotavirus vaccination in low-income countries and add to the growing body of evidence demonstrating safety of rotavirus vaccines.


Subject(s)
Intussusception , Rotavirus Infections , Rotavirus Vaccines , Rotavirus , Humans , Infant , Intussusception/chemically induced , Intussusception/epidemiology , Pakistan/epidemiology , Rotavirus Infections/epidemiology , Rotavirus Infections/prevention & control , Rotavirus Infections/complications , Rotavirus Vaccines/adverse effects , South Africa , Vaccination/adverse effects
17.
Mil Med ; 177(3): 345-51, 2012 Mar.
Article in English | MEDLINE | ID: mdl-22479925

ABSTRACT

Anthroponotic cutaneous leishmaniasis (CL) is a common cause of ulcerative lesions and disfiguring scarring among children in Afghanistan. Most lesions occur on the face and are commonly caused by the trypanosome protozoan parasite Leishmania tropica, transmitted by the bite of an infected sandfly (Phlebotomus sergenti). This study compared the effectiveness of a single localized treatment with thermotherapy to 5 days of intralesional administration of Glucantime for the treatment of CL. Three hundred and eighty-two patients with CL were randomly assigned to the two treatment groups and followed for 6 months. The cure rate for the thermotherapy group was 82.5%, compared to 74% in the Glucantime group. The authors concluded that a single localized treatment with thermotherapy was more effective than 5 days of intralesional administration of Glucantime. Additionally, thermotherapy was more cost-effective, with fewer side effects, of shorter duration, and with better patient compliance than intralesional Glucantime.


Subject(s)
Afghan Campaign 2001- , Antiprotozoal Agents/therapeutic use , Hyperthermia, Induced , Leishmaniasis, Cutaneous/therapy , Meglumine/therapeutic use , Organometallic Compounds/therapeutic use , Adolescent , Adult , Aged , Antiprotozoal Agents/administration & dosage , Child , Child, Preschool , Female , Humans , Injections, Intralesional , Male , Meglumine/administration & dosage , Meglumine Antimoniate , Middle Aged , Organometallic Compounds/administration & dosage , Prospective Studies , Treatment Outcome , Young Adult
18.
Malar J ; 10: 169, 2011 Jun 22.
Article in English | MEDLINE | ID: mdl-21696587

ABSTRACT

BACKGROUND: Accurate parasitological diagnosis of malaria is essential for targeting treatment where more than one species coexist. In this study, three rapid diagnostic tests (RDTs) (AccessBio CareStart (CSPfPan), CareStart PfPv (CSPfPv) and Standard Diagnostics Bioline (SDBPfPv)) were evaluated for their ability to detect natural Plasmodium vivax infections in a basic clinic setting. The potential for locally made evaporative cooling boxes (ECB) to protect the tests from heat damage in high summer temperatures was also investigated. METHODS: Venous blood was drawn from P. vivax positive patients in Jalalabad, Afghanistan and tested against a panel of six RDTs. The panel comprised two of each test type; one group was stored at room temperature and the other in an ECB. RDT results were evaluated against a consensus gold standard based on two double-read reference slides and PCR. The sensitivity, specificity and a measure of global performance for each test were determined and stratified by parasitaemia level and storage condition. RESULTS: In total, 306 patients were recruited, of which 284 were positive for P. vivax, one for Plasmodium malariae and none for Plasmodium falciparum; 21 were negative. All three RDTs were specific for malaria. The sensitivity and global performance index for each test were as follows: CSPfPan [98.6%, 95.1%], CSPfPv [91.9%, 90.5%] and SDBPfPv [96.5%, 82.9%], respectively. CSPfPv was 16% less sensitive to a parasitaemia below 5,000/µL. Room temperature storage of SDBPfPv led to a high proportion of invalid results (17%), which reduced to 10% in the ECB. Throughout the testing period, the ECB maintained ~8°C reduction over ambient temperatures and never exceeded 30°C. CONCLUSIONS: Of the three RDTs, the CSPfPan test was the most consistent and reliable, rendering it appropriate for this P. vivax predominant region. The CSPfPv test proved unsuitable owing to its reduced sensitivity at a parasitaemia below 5,000/µL (affecting 43% of study samples). Although the SDBPfPv device was more sensitive than the CSPfPv test, its invalid rate was unacceptably high. ECB storage reduced the proportion of invalid results for the SDBPfPv test, but surprisingly had no impact on RDT sensitivity at low parasitaemia.


Subject(s)
Diagnostic Tests, Routine/methods , Malaria, Vivax/diagnosis , Parasitemia/diagnosis , Plasmodium vivax/isolation & purification , Refrigeration/methods , Specimen Handling/methods , Adolescent , Adult , Afghanistan , Aged , Aged, 80 and over , Child , Humans , Middle Aged , Sensitivity and Specificity , Young Adult
20.
Malar J ; 9: 125, 2010 May 13.
Article in English | MEDLINE | ID: mdl-20465824

ABSTRACT

BACKGROUND: Malaria is a significant public health concern in Afghanistan. Currently, approximately 60% of the population, or nearly 14 million people, live in a malaria-endemic area. Afghanistan's diverse landscape and terrain contributes to the heterogeneous malaria prevalence across the country. Understanding the role of environmental variables on malaria transmission can further the effort for malaria control programme. METHODS: Provincial malaria epidemiological data (2004-2007) collected by the health posts in 23 provinces were used in conjunction with space-borne observations from NASA satellites. Specifically, the environmental variables, including precipitation, temperature and vegetation index measured by the Tropical Rainfall Measuring Mission and the Moderate Resolution Imaging Spectoradiometer, were used. Regression techniques were employed to model malaria cases as a function of environmental predictors. The resulting model was used for predicting malaria risks in Afghanistan. The entire time series except the last 6 months is used for training, and the last 6-month data is used for prediction and validation. RESULTS: Vegetation index, in general, is the strongest predictor, reflecting the fact that irrigation is the main factor that promotes malaria transmission in Afghanistan. Surface temperature is the second strongest predictor. Precipitation is not shown as a significant predictor, as it may not directly lead to higher larval population. Autoregressiveness of the malaria epidemiological data is apparent from the analysis. The malaria time series are modelled well, with provincial average R2 of 0.845. Although the R2 for prediction has larger variation, the total 6-month cases prediction is only 8.9% higher than the actual cases. CONCLUSIONS: The provincial monthly malaria cases can be modelled and predicted using satellite-measured environmental parameters with reasonable accuracy. The Third Strategic Approach of the WHO EMRO Malaria Control and Elimination Plan is aimed to develop a cost-effective surveillance system that includes forecasting, early warning and detection. The predictive and early warning capabilities shown in this paper support this strategy.


Subject(s)
Environmental Monitoring/methods , Malaria/epidemiology , Afghanistan/epidemiology , Epidemiological Monitoring , Forecasting , Humans , Malaria/prevention & control , Markov Chains , Meteorological Concepts , Models, Statistical , Neural Networks, Computer , Risk , Satellite Communications
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