http://hepcasia.com/wp-content/uploads/2015/03/lavanchy_-epidemiology-of-hcv.pdf

Evolving epidemiology of hepatitis C virus

The publication of the Global Burden of Disease Study 2010 (GBD 2010) and the accompanying collection of Lancet articles in December 2012 provided the most comprehensive attempt to quantify the burden of almost 300 diseases, injuries, and risk factors, including neglected tropical diseases (NTDs) [1]–[3]. The disability-adjusted life year (DALY), the metric used in the GBD 2010, is a tool which may be used to assess and compare the relative impact of a number of diseases locally and globally [4]–[6]. Table 1 lists the major NTDs as defined by the World Health Organization (WHO) [7] and their estimated DALYs [1]. With a few exceptions, most of the NTDs currently listed by the WHO [7] or those on the expanded list from PLOS Neglected Tropical Diseases [8] are disablers rather than killers, so the DALY estimates represent one of the few metrics available that could fully embrace the chronic effects of these infections.

Table 1
Estimated DALYs (in millions) of the NTDs from the Global Burden of Disease Study 2010.

Disease	DALYs from GBD 2010 (numbers in parentheses indicate 95% confidence intervals) [1]	
NTDs	26.06 (20.30–35.12)	
Intestinal nematode infections	5.19 (2.98–8.81)	
Hookworm disease	3.23 (1.70–5.73)	
Ascariasis	1.32 (0.71–2.35)	
Trichuriasis	0.64 (0.35–1.06)	
Leishmaniasis	3.32 (2.18–4.90)	
Schistosomiasis	3.31 (1.70–6.26)	
Lymphatic filariasis	2.78 (1.8–4.00)	
Food-borne trematodiases	1.88 (0.70–4.84)	
Rabies	1.46 ((0.85–2.66)	
Dengue	0.83 (0.34–1.41)	
African trypanosomiasis	0.56 (0.08–1.77)	
Chagas disease	0.55 (0.27–1.05)	
Cysticercosis	0.50 (0.38–0.66)	
Onchocerciasis	0.49 (0.36–0.66)	
Trachoma	0.33 (0.24–0.44)	
Echinococcosis	0.14 (0.07–0.29)	
Yellow fever	<0.001	
Other NTDs *	4.72 (3.53–6.35)	


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* Relapsing fevers, typhus fever, spotted fever, Q fever, other rickettsioses, other mosquito-borne viral fevers, unspecified arthropod-borne viral fever, arenaviral haemorrhagic fever, toxoplasmosis, unspecified protozoal disease, taeniasis, diphyllobothriasis and sparganosis, other cestode infections, dracunculiasis, trichinellosis, strongyloidiasis, enterobiasis, and other helminthiases.



Even DALYs, however, do not tell the complete story of the harmful effects from NTDs. Some of the specific and potential shortcomings of GBD 2010 have been highlighted elsewhere [9]. Furthermore, DALYs measure only direct health loss and, for example, do not consider the economic impact of the NTDs that results from detrimental effects on school attendance and child development, agriculture (especially from zoonotic NTDs), and overall economic productivity [10], [11]. Nor do DALYs account for direct costs of treatment, surveillance, and prevention measures. Yet, economic impact has emerged as an essential feature of the NTDs, which may trap people in a cycle of poverty and disease [10]–[12]. Additional aspects not considered by the DALY metrics are the important elements of social stigma for many of the NTDs and the spillover effects to family and community members [13], [14], loss of tourism [15], and health system overload (e.g., during dengue outbreaks). Ultimately NTD control and elimination efforts could produce social and economic benefits not necessarily reflected in the DALY metrics, especially among the most affected poor communities [11].

/pdf/the-global-burden-of-disease-study-2010-interpretation-and-2s1owuc43r.pdf

The global burden of disease study 2010: interpretation and implications for the neglected tropical diseases.

https://aasldpubs.onlinelibrary.wiley.com/doi/pdf/10.1002/hep.20110

Chronic hepatitis B: update of recommendations.

An estimated 3% of the world population is infected with Hepatitis C virus (HCV), a hepatotropic RNA virus, transmitted primarily via the blood route. The major modes of transmission of the virus include injection drug use, unsafe injection practices, blood transfusion etc. HCV causes chronic hepatitis in about 80% of those infected by it. The mainstay in diagnosing infection with HCV is to initially screen high risk groups for antibodies to HCV (anti-HCV). The inclusion of serum to cut-off ratio (S/CO) in recent guidelines is helpful in deciding the supplemental assay to be used to confirm initially reactive screening results. Nucleic acid amplification tests (NAT) are used as confirmatory tools, and also to determine viral load prior to initiating treatment. Quantitative NAT has replaced qualitative assays. Genotyping is an important tool in clinical management to predict the likelihood of response and determine the optimal duration of therapy. The impact of this infection has begun to emerge in India. The problem of professional blood donation despite an existing law against it, and flourishing unsafe injection practices, are potential sources for the spread of hepatitis C in our country. All health care practitioners need to understand how to establish or exclude a diagnosis of HCV infection and to interpret the tests correctly. In the absence of a preventive or therapeutic vaccine, and also of post-exposure prophylaxis against the virus, it is imperative to diagnose infection by HCV so as to prevent hepatic insult and the ensuing complications that follow, including primary hepatocellular carcinoma (HCC). This review aims to help blood bank staff regarding options for diagnosis and management of donors positive for HCV.

Hepatitis C virus: Screening, diagnosis, and interpretation of laboratory assays

Hepatitis C virus is the main cause of chronic liver disease and cirrhosis, and also liver cancer. According to global health importance of hepatitis C, decreasing the burden of HCV infection and HCV-related disease is so important. It need to design and implement preventive activity against HCV infection by introducing primary and secondary prevention activities. Hepatitis C has no effective vaccine. Considering counseling and education of people to avoid risk factors, such as IV drug abusing and having multiple sex partners, are important primary prevention activities.Public health surveillance is an effective strategy to detect new cases, risk factors and burden of disease. Early diagnosis and prompt treatment by expert specialists can decrease hepatitis C and HCV- related diseases prevalence, disease sequel and burden of hepatitis C. Monitoring and assessment of preventive programs is required to identify the strength and weakness of program and to re-establish newer one.

/pdf/recommendations-for-prevention-and-control-of-hepatitis-c-1du8ydbzuc.pdf

Recommendations for Prevention and Control of Hepatitis C Virus (HCV) Infection and HCV-Related Chronic Disease

Guideline for Management of Hepatitis C Infection

Commentaries and points of view 2

Chronic Hepatitis C Genotype Assay

How to Monotor the Patients

Special Patients and Populations

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