Citas bibligráficas
Cabezas, C., (2024). Impacto de la inmunización infantil contra HBV sobre la prevalencia de HDV en áreas hiperendémicas de los Andes y la Amazonía del Perú [Universidad Peruana Cayetano Heredia]. https://hdl.handle.net/20.500.12866/15574
Cabezas, C., Impacto de la inmunización infantil contra HBV sobre la prevalencia de HDV en áreas hiperendémicas de los Andes y la Amazonía del Perú []. PE: Universidad Peruana Cayetano Heredia; 2024. https://hdl.handle.net/20.500.12866/15574
@mastersthesis{renati/911366,
title = "Impacto de la inmunización infantil contra HBV sobre la prevalencia de HDV en áreas hiperendémicas de los Andes y la Amazonía del Perú",
author = "Cabezas Sanchez, Cesar Augusto",
publisher = "Universidad Peruana Cayetano Heredia",
year = "2024"
}
Introduction. Infections by hepatitis B virus (HBV) and hepatitis Delta virus (HDV) are a global public health issue, particularly in hyperendemic areas such as the Amazon and inter-Andean valleys in Peru, where there is a higher prevalence of chronic carriers of HBsAg and HDV, associated with fulminant hepatitis, cirrhosis, and hepatocellular carcinoma. Following the efficacy of the HBV vaccine demonstrated in 1991 in Abancay, 1994 in Huanta, and pilot immunization programs against HBV starting in 2003 in Amazonian communities, it is assumed that HBV immunization indirectly prevents HDV infection. Thus, there is a need to review and systematize available publications to determine infection patterns in endemic areas before and after the initiation of HBV immunization programs. Objective: To determine whether the prevalence of HBV and HDV infection in two hyperendemic Andean and Amazonian areas of Peru has significantly reduced following the implementation of HBV immunization. Methodology: A review of publications showing the prevalence of viral hepatitis B and D infection in children under 10 years old was conducted, corresponding to studies conducted before and after HBV immunization programs in Huanta, Abancay, and Daten del Marañon. Infection was determined using ELISA technique for serological markers of HBV (HBsAg, AntiHBc) and anti-HDV antibodies. Eight indexed articles on PubMed were identified, including studies on children under 10 years old conducted in Abancay (Apurímac), Huanta (Ayacucho), and indigenous communities of the Amazon Daten del Marañón and Requena (Loreto). Data were analyzed using Stata v17.0 statistical software. No inferential analyses were applied. All studies were approved by Ethics Committees. Results: Before vaccination in children under 10 years old, the prevalence of HBsAg carriers was 10.3%, 8.3%, and 10.6% in Huanta, Abancay, and native communities of the Amazon, respectively. HDV infection in carriers was 20.7%, 18.5%, and 26.9% in Huanta, Abancay, and native Amazonian communities, respectively. Prevalence levels following interventions with HBV vaccination showed absence of HBsAg carriers and HDV infection in children under 10 years old residing in the aforementioned areas. Conclusion: The prevalence rates of HBV and HDV infection in the population under 10 years old in the studied areas have significantly reduced following the implementation of the HBV vaccination program in Peru, emphasizing the necessity to maintain this program to sustain such reduction.
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