Hepatitis A to E: what's new?

Cost-effectiveness of integrated maternal HIV, syphilis, and hepatitis B screening opt-out strategies in Nepal: a modelling study

Background

The World Health Organisation (WHO) developed a comprehensive framework encouraging an integrated approach to achieve triple elimination of vertical transmission of HIV, syphilis, and hepatitis B in Asia. Current screening practices in Nepal show significantly lower coverage for syphilis and hepatitis B compared to HIV suggesting potential for integration. In this study, we aimed to model the cost-effectiveness of triple screening during antenatal care in Nepal.

Methods

We modelled maternal HIV, hepatitis B, and syphilis cascade of care and their corresponding disease states using disease-specific Markov models over a 20-year horizon with a cycle length of one year. We compared dual integrated screening for HIV and syphilis and triple integrated screening for HIV, syphilis, and hepatitis B with HIV screening only. Costs were estimated from a provider's perspective. Results were presented as incremental cost-effectiveness ratios (ICERs). Univariable and probabilistic sensitivity analyses were conducted.

Findings

Our modelling analysis showed that dual-integrated screening for HIV and syphilis was highly cost-effective when compared to current strategy of screening for HIV only (ICERs of US$18). Triple-integrated antenatal screening for HIV, syphilis, and hepatitis B was highly cost-effective compared with dual-integrated strategy with an ICER of US$114. Moreover, 100% and 98% of the probabilistic sensitivity analysis estimates for dual- and triple-integrated screening were proven cost-effective, compared to HIV-only screening.

Interpretation

Our results support WHO recommendations for implementing integrated triple antenatal screening in Nepal and Asia more broadly, aiming to reduce maternal and neonatal morbidity through early detection and intervention.

Funding

No funding was reported.

Hepatitis A: Viral Structure, Classification, Life Cycle, Clinical Symptoms, Diagnosis Error, and Vaccination

Hepatitis A virus (HAV) is one of the well-known viruses that cause hepatitis all around the globe. Although this illness has decreased in developed countries due to extensive immunization, numerous developing and under-developed countries are struggling with this virus. HAV infection can be spread by oral-fecal contact, and there are frequent epidemics through nutrition. Improvements in socioeconomic and sanitary circumstances have caused a shift in the disease's prevalence worldwide. Younger children are usually asymptomatic, but as they become older, the infection symptoms begin to appear. Symptoms range from slight inflammation and jaundice to acute liver failure in older individuals. While an acute infection may be self-limiting, unrecognized persistent infections, and the misapplication of therapeutic methods based on clinical guidelines are linked to a higher incidence of cirrhosis, hepatocellular carcinoma, and mortality. Fortunately, most patients recover within two months of infection, though 10-15% of patients will relapse within the first six months. A virus seldom leads to persistent infection or liver damage. The mainstay of therapy is based on supportive care. All children from 12-23 months, as well as some susceptible populations, should receive routine vaccinations, according to the Centers for Disease Control and Prevention and the American Academy of Pediatrics. Laboratory diagnosis of HAV is based on antigen detection, checking liver enzyme levels, and antibody screening. Furthermore, polymerase chain reaction (PCR) technology has identified HAV in suspected nutrition sources; therefore, this technique is used for preventative measures and food-related laws.

Diagnosis and Management of Autoimmune Hemolytic Anemia in Patients with Liver and Bowel Disorders

Anemia is a common feature of liver and bowel diseases. Although the main causes of anemia in these conditions are represented by gastrointestinal bleeding and iron deficiency, autoimmune hemolytic anemia should be considered in the differential diagnosis. Due to the epidemiological association, autoimmune hemolytic anemia should particularly be suspected in patients affected by inflammatory and autoimmune diseases, such as autoimmune or acute viral hepatitis, primary biliary cholangitis, and inflammatory bowel disease. In the presence of biochemical indices of hemolysis, the direct antiglobulin test can detect the presence of warm or cold reacting antibodies, allowing for a prompt treatment. Drug-induced, immune-mediated hemolytic anemia should be ruled out. On the other hand, the choice of treatment should consider possible adverse events related to the underlying conditions. Given the adverse impact of anemia on clinical outcomes, maintaining a high clinical suspicion to reach a prompt diagnosis is the key to establishing an adequate treatment.

Maternal Hepatitis B Infection Burden, Comorbidity and Pregnancy Outcome in a Low-Income Population on the Myanmar-Thailand Border: A Retrospective Cohort Study

Objectives

Hepatitis B virus (HBV) was believed to have minimal impact on pregnancy outcomes apart from the risk of perinatal transmission. In more recent years, there have been reports of adverse associations, most consistently preterm birth (PTB), but this is in the context of high rates of caesarean section. The aim of this study was to explore the association of HBV on pregnancy outcomes in marginalized, low-income populations on the Myanmar-Thailand border.

Methods

HBsAg positive (+) point of care rapid detection tests results were confirmed by immunoassays. Women with a confirmed HBsAg status, HIV- and syphilis-negative at first antenatal care screening, singleton fetus and known pregnancy outcome (Aug-2012 to Dec-2016) were included. Logistic regression analysis was used to evaluate associations between HBV group (controls HBsAg negative, HBsAg+/HBeAg-, or HBsAg+/HBeAg+) and pregnancy outcome and comorbidity.

Results

Most women were tested, 15,046/15,114 (99.6%) for HBV. The inclusion criteria were not met for 4,089/15,046 (27.2%) women due mainly to unavailability of pregnancy outcome and nonconfirmation of HBsAg+. In evaluable women 687/11,025 (6.2%) were HBsAg+, with 476/11,025 (4.3%) HBsAg+/HBeAg- and 211/11,025 (1.9%) were HBsAg+/HBeAg+. The caesarean section rate was low at 522/8,963 (5.8%). No significant associations were observed between pregnancy comorbidities or adverse pregnancy outcomes and HBV status.

Conclusions

The results highlight the disease burden of HBV in women on the Myanmar-Thailand border and support original reports of a lack of significant associations with HBsAg+ irrespective of HBeAg status, for comorbidity, and pregnancy outcomes in deliveries supervised by skilled birth attendants.

Hepatitis E Virus Infection During Pregnancy: The Overlooked Cause of Maternal and Fetal Mortality

BACKGROUND

Hepatitis E virus (HEV) is one the leading causes of maternal and fetal mortality. Nevertheless, in some geographical locations, especially Egypt, despite having high frequency of HEV seropositivity, HEV infection follows an asymptomatic or mild course during pregnancy. These anomalous observations have distracted attention from the importance of HEV infection in pregnant women.

METHODS

While tragic cases of HEV-infected pregnant women cannot be neglected any longer.

CONCLUSION

These circumstances create a strong demand for the increasing awareness of HEV infection through training programs, appropriate management of HEV infection among pregnant women, routine screening of pregnant women for timely diagnosis of HEV infection, proper treatment of HEVinfected patients, optimal preventive measures, and development of a prophylactic vaccine against HEV infection.