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Conflict, in its active or latent forms, is everywhere. The COVID-19 pandemic has demonstrated that public health emergencies can strike any country at any time. Given the universality of and interconnections between conflict, humanitarian crises, and public health emergencies, practitioners trained
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in one sector or the other are being called upon to understand how to navigate all of these emergencies at once.
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PLoS ONE 13(8): e0202499. https://doi.org/10.1371/journal.pone.0202499
This was a school-based cross-sectional study conducted in 2015 among 305 school children aged 7–16 years from two primary schools located in Ilemela and Magu Districts, north-western Tanzania. Single stool and urine samples w
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ere collected from each participant and examined for the presence of Schistosoma mansoni eggs, parasite antigen, and parasite DNA using KK thick smears, POC-CCA tests, and real-time PCR, respectively.
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This paper aims to provide aid agencies with initial analysis and guidance to inform the design, implementation and adaptation of conflict-sensitive humanitarian and development responses to the COVID-19 pandemic. It presents a series of overarching considerations to take into account when determini
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ng how to build a conflict-sensitive approach into COVID-19 response activities, before outlining some initial, sector-specific considerations. Recommendations are presented throughout.
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Access to responsive, people-centred health systems is essential to ensure appropriate health care for refugees and migrants throughout the process of migration and settlement. Focusing on intercultural competence and diversity sensitivity, this cou
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rse contributes to a broader WHO strategy to develop an evidence-based response to the public health needs of refugees and migrants.
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Methicillin-resistant Staphylococcus aureus(MRSA) strainsor multidrug-resistant S.aureus, initially described in 1960s,emerged in the last decade as a cause of nosocomial infections responsible for rapidly progressive, potential fatal diseases including life-threatening pneumonia, necrotizing fascii
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tis, endocarditis, osteomyelitis, severe sepsis, and toxinoses such as toxic shock syndrome. A multifactorial range of independent risk factors for MRSA has been reported in literature and include immunosuppression,hemodialysis, peripheral malperfusion, advanced age, extended in-hospital stays, residency in long-term care facilities (LTCFs), inadequacy of antimicrobial therapy,indwelling devices, insulin-requiring diabetes, and decubitusulcers, among others.
Hindawi Canadian Journal of Infectious Diseases and Medical Microbiology Volume 2019, Article ID 8321834, 9 pageshttps://doi.org/10.1155/2019/8321834
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Comparison of the Influence of Different Nucleic Acid Extraction Assays on the Sensitivity of Trypanosoma cruzi-Specific Real-Time PCR
Kann, S.; Zabala-Monterroza, W.; García, C. et al.
Multidisciplinary Digital Publishing Institute MDPI
(2022)
CC
For the molecular diagnosis of Chagas disease by real-time PCR (polymerase chain reaction), optimization of diagnostic accuracy is desirable. The detection limit of real-time PCR assays for the diagnosis of Trypanosoma cruzi in human serum is affected by various influences including the choice of th
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e nucleic acid extraction assay. In this study, three nucleic acid extraction assays were compared regarding their influence on the sensitivity of a T. cruzi-specific real-time PCR with 62 reference sera containing T. cruzi target DNA (deoxyribonucleotide acid). More than 95% of the positive sera were correctly identified after all three nucleic acid extraction strategies with a detection rate ranging from 96.8% (60/62) for the worst assay to 100% (62/62) for the best one. A matched pairs analysis for the comparison of the cycle threshold (Ct) values obtained with the 59 reference samples with positive real-time PCR results after all three nucleic acid extraction schemes indicated differences in a range of about 3 Ct steps. Summarized, all three compared nucleic acid extraction schemes were basically suitable for T. cruzi-specific PCR from serum with some minor differences. However, in the case of low quantities of circulating parasite DNA in the serum of a patient with Chagas disease, even minor effects can make a difference in the individual diagnosis.
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Technical and operational ‘how-to’: practical considerations
The objective of the study was the validation and implementation of GeneXpert MTB/RIF for routine use in the rapid detection of tuberculosis and sensitivity to rifampicin in clinical samples; for this, 1592 respiratory samples were collected and ana
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lyzed in the laboratory of Instituto Nacional de Investigación en Salud Pública Guayaquil. The analysis of the results of GeneXpert in comparison with smear microscopy showed an initial sensitivity of 99.8% and specificity of 93.2%; The analysis of discrepancies using the results of the culture as a reference method showed that the GeneXpert results considered false negatives turned out to be true negatives, the same happens with the false positives that correspond to true positives. Recalculated the sensitivity and specificity of the GeneXpert was 99.8% and 100% correspondingly. The comparison with the drugs susceptibility test showed a sensitivity of 91.4% and a specificity of 95.5% for the GeneXpert MTB/RIF system. It is concluded that the implementation of the GeneXpert system allows solution to certain problems associated with the application of conventional diagnostic methodologies, decreasing the waiting times, and increasing the sensitivity and specificity in the diagnosis of drug-resistant tuberculosis, thus generating a valuable opportunity for early diagnosis.
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Journal of Infectious Diseases and Therapeutics, 2013, 1, 17-24
Developing health centres and hospital s indices for Syria, based on HeRAMS dataset 2014
World Health Organization
(2017)
C_WHO
This research paper uses the Health Resources and services Availability Mapping System (HeRAMS) database to develop two composite indices – one for health centres and one for hospitals – in order to analyse and assess the health facilities’ performance across time and to evaluate the di
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sparities among regions in the Syrian Arab Republic. The indices will provide an evidence-based tool for the main actors in the health sector to identify gaps, to intervene accordingly and to assess the impact of their interventions on the health system. The process of constructing the indices includes description and selection of variables, application of normalization techniques and weighting methods, and sensitivity analysis.
A literature review, analysis of the scope of the HeRAMS database, analysis of the crisis situation, data limitation and expert consultations were the main aspects of the construction process of the indices.
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Humanitarian Response in Violent Conflict
recommended
Catholic Relief Services CRS
(2013)
A Toolbox of Conflict Sensitive Indicators.
This toolbox adapts a sample of 15 indicators from the SPHERE Project's Humanitarian Charter and Minimum Standards in Humanitarian Response to be even more conflict sensitive while remaining practical and user-friendly
Screening programmes for tuberculosis (TB) among immigrants rarely consider the heterogeneity of
risk related to migrants’ country of origin. We assess the performance of a large screening programme in asylum seekers by analysing (i) the difference in yield and numbers needed to screen (NNS) by c
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ountry and WHO-reported TB burden, (ii) the possible impact of screening thresholds on sensitivity, and (iii) the value of WHO-estimated TB burden to improve the prediction accuracy of screening yield.
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High Tuberculosis Prevalence in a South African Prison: The Need for Routine Tuberculosis Screening
recommended
PLoS ONE 9(1): e87262. doi:10.1371/journal.pone.0087262
Guidance on pooled testing for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
recommended
The purpose of this document is to provide guidance on the use of pooled sample testing strategy in coronavirus disease (COVID-19)
testing laboratories of the African Union Member States for scaling up SARS-CoV-2 nucleic acid testing capacity with the available resources. The current document descr
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ibes the effect of factors such as the prevalence of COVID-19 in the population to be tested, the homogeneity of pools, and the sensitivity of the molecular test in optimal pool size determination. It also highlights the importance of monitoring the prevalence of COVID-19 in a population to be tested and proper validation of the test, to limit the potential for false-negative results. Validation studies to determine the optimal pool size by testing laboratories are recommended as the optimum approach. A safe, simple ‘two-stage pooling’ option has been indicated in this guidance to be used by laboratories until such validation can be achieved.
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Under-diagnosis of asthma in ‘under-fives’ may be alleviated by improved inquiry into disease history. We assessed a questionnaire-based screening tool for asthma among 614 ‘under-fives’ with severe respiratory illness in Uganda. The questionnaire responses were compared to post hoc consensu
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s diagnoses by three pediatricians who were guided by study definitions that were based on medical history, physical examination findings, laboratory and radiological tests, and response to bronchodilators. Children with asthma or bronchiolitis were categorized as “asthma syndrome”. Using this approach, 253 (41.2%) had asthma syndrome. History of and present breathing difficulties and present cough and wheezing was the best performing combination of four questionnaire items [sensitivity 80.8% (95% CI 77.6–84.0); specificity 84.7% (95% CI 81.8–87.6)]. The screening tool for asthma syndrome in ‘under-fives’ may provide a simple, cheap and quick method of identifying children with possible asthma. The validity and reliability of this tool in primary care settings should be tested.
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Training materials for healthcare workers
Bulletin of the World Health Organization Volume 93, Number 9, September 2015, 589-664
