The purpose of this report is to provide forecasts of future demand for diagnostic tests used in the fields of HIV and viral hepatitis. These forecasts have multiple potential uses. First, they may inform advocacy efforts to increase access to diagnostics. Second, they may guide health systems and procurement organizations in planning how to obtain adequate supplies of diagnostics to fulfil service delivery needs. Third, they may aid manufacturers in identifying opportunities to contribute to meeting anticipated market demands. This report jointly presents diagnostic test forecasts across disease areas in recognition of the benefits of addressing HIV and viral hepatitis B and C in a coordinated manner.

Testing and diagnosis of hepatitis B (HBV) and C (HCV) infection is the gateway for access to both prevention and treatment services, and is a crucial component of an effective response to the hepatitis epidemic. Early identification of persons with chronic HBV or HCV infection enables them to receive the necessary care and treatment to prevent or delay progression of liver disease. Testing also provides an opportunity to link people to interventions to reduce transmission, through counselling on risk behaviors and provision of prevention commodities (such as sterile needles and syringes) and hepatitis B vaccination. These are the first WHO guidelines on testing for chronic HBV and HCV infection and complement published guidance by WHO on the prevention, care and treatment of chronic hepatitis C and hepatitis B infection. These guidelines outline the public health approach to strengthening and expanding current testing practices for HBV and HCV, and are intended for use across age groups and populations.

WHO has set a global goal to eliminate HCV as a public health problem by 2030. WHO estimates that 58 million people had chronic hepatitis C virus (HCV) infection globally in 2019, and less than a quarter of them were diagnosed. New and innovative approaches are needed to accelerate progress toward the HCV elimination targets. Self-testing is one such approach. These guidelines provide a new recommendation and guidance on HCV self-testing to complement existing HCV testing services in countries. These guidelines also highlight operational considerations to support strategic implementation and scale up of HCV self-testing.

Praise for the First Edition " . . . the book is a valuable addition to the literature in the field, serving as a much-needed guide for both clinicians and advanced students."—Zentralblatt MATH A new edition of the cutting-edge guide to diagnostic tests in medical research In recent years, a considerable amount of research has focused on evolving methods for designing and analyzing diagnostic accuracy studies. Statistical Methods in Diagnostic Medicine, Second Edition continues to provide a comprehensive approach to the topic, guiding readers through the necessary practices for understanding these studies and generalizing the results to patient populations. Following a basic introduction to measuring test accuracy and study design, the authors successfully define various measures of diagnostic accuracy, describe strategies for designing diagnostic accuracy studies, and present key statistical methods for estimating and comparing test accuracy. Topics new to the Second Edition include: Methods for tests designed to detect and locate lesions Recommendations for covariate-adjustment Methods for estimating and comparing predictive values and sample size calculations Correcting techniques for verification and imperfect standard biases Sample size calculation for multiple reader studies when pilot data are available Updated meta-analysis methods, now incorporating random effects Three case studies thoroughly showcase some of the questions and statistical issues that arise in diagnostic medicine, with all associated data provided in detailed appendices. A related web site features Fortran, SAS®, and R software packages so that readers can conduct their own analyses. Statistical Methods in Diagnostic Medicine, Second Edition is an excellent supplement for biostatistics courses at the graduate level. It also serves as a valuable reference for clinicians and researchers working in the fields of medicine, epidemiology, and biostatistics.

Increased HIV screening may help identify more people with the disease, but there may not be enough resources to provide them with the care they need. The Institute of Medicine's Committee on HIV Screening and Access to Care concludes that more practitioners must be trained in HIV/AIDS care and treatment and their hospitals, clinics, and health departments must receive sufficient funding to meet a growing demand for care.

Infectious diseases are the leading cause of death globally, particularly among children and young adults. The spread of new pathogens and the threat of antimicrobial resistance pose particular challenges in combating these diseases. Major Infectious Diseases identifies feasible, cost-effective packages of interventions and strategies across delivery platforms to prevent and treat HIV/AIDS, other sexually transmitted infections, tuberculosis, malaria, adult febrile illness, viral hepatitis, and neglected tropical diseases. The volume emphasizes the need to effectively address emerging antimicrobial resistance, strengthen health systems, and increase access to care. The attainable goals are to reduce incidence, develop innovative approaches, and optimize existing tools in resource-constrained settings.

The objective of the list is to help countries develop or update their national essential diagnostics lists, raise awareness and political will, guide procurement and regulation policies and improve access to the most important in vitro diagnostics that all countries need to make available to their populations, particularly in low-resourced countries. It will also contribute towards health systems strengthening and realizing universal health coverage.