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1
Access to safe blood and blood products is recognized as one of the key requirements for delivery of modern health care in the journey towards health for all. The foundation of safe and sustainable
...
blood supplies depends on the collection of blood from voluntary non-remunerated and low-risk donors. Data from the WHO Global Database for Blood Safety (GDBS) brings out several inadequacies related to the supply and safety of blood and blood products. These inadequacies include a number of variations in safe blood practices across the world, including the quantity of blood donated (voluntary and replacement types), quality and adequate testing of the donated blood (immunohaematology [IH] and transfusion-transmitted infections [TTIs]), rational use of blood and blood components such as appropriate patient blood management protocols. These variations are very high in countries of the South-East Asian Region and most of them are either low- or middle-income countries (LMICs).
more
The provision of safe and efficacious blood and blood components for transfusion or manufacturing use involves a number of processes, from the selection of
...
blood donors and the collection, processing and testing of blood donations to the testing of patient samples, the issue of compatible blood and its administration to the patient. There is a risk of error in each process in this “transfusion chain” and a failure at any of these stages can have serious implications for the recipients of blood and blood products. Thus, while blood transfusion can be life-saving, there are associated risks, particularly the transmission of bloodborne infections.
Screening for transfusion-transmissible infections (TTIs) to exclude blood donations at risk of transmitting infection from donors to recipients is a critical part of the process of ensuring that transfusion is as safe as possible. Effective screening for evidence of the presence of the most common and dangerous TTIs can reduce the risk of transmission to very low levels. more
Screening for transfusion-transmissible infections (TTIs) to exclude blood donations at risk of transmitting infection from donors to recipients is a critical part of the process of ensuring that transfusion is as safe as possible. Effective screening for evidence of the presence of the most common and dangerous TTIs can reduce the risk of transmission to very low levels. more
Guidelines For Setting Up Blood Storage Centres At First Referral Units
Maternal Health Division Department of Family Welfare Government of India
Maternal Health Division Department of Family Welfare Government of India
(2003)
C1
The new WHO guidelines provide recommended steps for safe phlebotomy and reiterate accepted principles for drawing, collecting blood and transporting blood to laboratories/
...
blood banks.
more
This guidance document has been produced by WHO to assist blood services in the development of national plans to respond to any emerging infectious threats to the sufficiency or safety of the blood
...
supply, whether from an existing infectious agent that is changing in incidence and spread, or from a newly identified infectious agent. It is intended that this document be followed to guide the national blood service through the process of planning how to respond in a timely, controlled and appropriate way to any specific infectious threat that may subsequently emerge. It is acknowledged that it is not only the blood supply that may be affected by such emerging infectious threats; in those countries undertaking transplantation, the supply of cell, tissues and organs may also be threatened. Increasingly, blood services are taking overall national responsibility for transplantation in their capacity as the organization responsible for the collection, processing, storage and supply of cells, tissues and organs. This approach is both sensible and appropriate, as the overall donor selection and screening processes are the same or very similar. This guidance document can therefore also be used to assist those bodies responsible for the provision of cells, tissues and organs to prepare for an emerging infectious threat.
more
The WHO guidelines provide recommended steps for safe phlebotomy and reiterate accepted principles for drawing, collecting blood and transporting blood to laboratories/
...
blood banks.
more
Use of Convalescent Whole Blood or Plasma Collected from Patients Recovered from Ebola Virus Disease for Transfusion, as an Empirical Treatment during Outbreaks
World Health Organization
(2014)
This interim guidance to national health authorities and blood transfusion services outlines the steps required to collect convalescent whole blood (CWB) or plasma (CP) from Ebola virus disease (EV
...
D) recovered patients for transfusion to patients with early EVD, as an empirical treatment modality.
Document contents:
Guidance on donor selection, screening, donation and handling of blood and plasma units;
guidance on transfusion of convalescent whole blood or plasma;
other considerations.
more
HIV-1 drug resistance (HIVDR) genotyping is an essential component of the WHO global HIVDR surveillance strategy. Plasma “gold standard” specimen type for HIVDR genotyping, but its use may not be feasible in rural, remote areas in low- and middle-income countries, since preparing and storing it
...
require personnel and laboratory infrastructure that are often lacking. An alternative specimen type is dried blood spots (DBS), which can be made without special laboratory processing. DBS are more easily transported than plasma because they can be shipped at ambient temperature as non-hazardous materials using regular mail or courier services.
3rd edition
more
External quality assessment (EQA) is an important component of quality systems for blood transfusion services. Establishing external quality assessment programmes for screening of donated blood for
...
transfusion-transmissible infections (TTI): implementation guide aims to support WHO member States in establishing and operating EQA programmes for screening donated blood for TTI. The guides has been designed for use by national health authorities and EQA organizing institutions in the development of EQA programme. It will also give participating laboratories an insight into the organization of EQA programmes for TTI screening and an understanding of the benefits of participation.
more
The objective of this document is to guide the preparation and implementation of national preparedness plans for the safety of substances of human origin during outbreaks of Zika virus infection, both in affected and non-affected areas.
This report investigates the impact of potential misclassification of samples on HIV prevalence estimates for 23 surveys conducted from 2010-2014. In addition to visual inspection of laboratory results, we examined how accounting for potential miscl
...
assification of HIV status through Bayesian latent class models affected the prevalence estimates. Two types of Bayesian models were specified: a model that only uses the individual dichotomous test results and a continuous model that uses the quantitative information of the EIA (i.e., the signal-to-cutoff values). Overall, we found that adjusted prevalence estimates matched the surveys’ original results, with overlapping uncertainty intervals. This suggested that misclassification of HIV status should not affect the prevalence estimates in most surveys. However, our analyses suggested that two surveys may be problematic. The prevalence could have been overestimated in the Uganda AIDS Indicator Survey 2011 and the Zambia Demographic and Health Survey 2013-14, although the magnitude of overestimation remains difficult to ascertain. Interpreting results from the Uganda survey is difficult because of the lack of internal quality control and potential violation of the multivariate normality assumption of the continuous Bayesian latent class model. In conclusion, despite the limitations of our latent class models, our analyses suggest that prevalence estimates from most of the surveys reviewed are not affected by sample misclassification.
more
Operational guide: use of referral laboratories for the analysis of foodborne hazards in the Pacific
The Operational guide: use of referral laboratories for the analysis of foodborne hazards in the Pacific aims to strengthen the food analysis capacity of Pacific Island countries and areas by identifying national and reference laboratories capable of testing for priority foodborne hazards. The Pacif
...
ic Island countries and areas are often vulnerable to food safety incidents and emergencies due to their geographical distribution and dependence on food imports. The guide outlines key considerations for selecting referral laboratories and submitting samples to them, enabling continuous improvement of food safety systems and providing safe food for all. The target audiences are health and food safety authorities.
more
N Engl J Med 2019;380:2429-39.DOI: 10.1056/NEJMoa1901113
The publication conveys the most recent quantitative surveillance results focusing on noncommunicable disease (NCDs)-related risk behaviours among adults from the WHO STEPwise approach to NCD risk factor surveillance (STEPS) and tobacco use among adults from the Global Adult Tobacco Survey (GATS) in
...
Member States of the WHO South-East Asia Region. This publication contains selected indicators relating to tobacco use and other related risk behaviours of adults in Member States of the WHO South-East Asia Region. The tobacco indicators are taken from GATS or STEPS and other indicators relating to risk behaviours (history– dietary behaviours, physical activity, alcohol use, cervical cancer screening; physical measurements – body mass index, blood pressure, waist circumference; biochemical measurements – fasting blood glucose level, blood glucose level 2 hours after glucose load, total blood cholesterol, urine sodium and urine creatinine) are taken from STEPS. The latest findings from surveys conducted in Member States are presented in the publication.
more
WHO Prequalification of In Vitro Diagnostics - Public Report (Product: GeeniusTM HIV 1/2 Confirmatory Assay with GeeniusTM HIV 1/2 Confirmatory Controls, WHO reference number: PQDx 0181-031-00)
World Health Organization
(2017)
C_WHO
PQDx 0181-031-00
WHO PQ Public Report
March/2017, version 3.0
