Adjusted estimate of the prevalence of hepatitis delta virus in 25 countries and territories

Devin M. Razavi-Shearer*, Maria Buti, Frank Tacke, Norah A. Terrault, Stefan Zeuzem, Zaigham Abbas, Alessio Aghemo, Ulus S. Akarca, Nasser M. Al Masri, Abduljaleel M. Alalwan, Marianne Alanko Blome, Soo Aleman, Abdullah S. Alghamdi, Mohammed Alghamdi, Saad Alghamdi, Waleed K. Al-Hamoudi, Ela Ali, Abdulrahman A. Aljumah, Ibrahim H. Altraif, Jazag AmarsanaaTarik Asselah, Oidov Baatarkhuu, Adriana Babameto, Ziv Ben-Ari, Thomas Berg, Mia J. Biondi, Wornei S. M. Braga, Carlos E. Brandao-Mello, Robert S. Brown Jr, Maurizia R. Brunetto, Joaquin Cabezas, Mariana Cardoso, Henry Lik Yuen Chan, Hugo Cheinquer, Chien-Jen Chen, Pei-Jer Chen, Cheng-Hung Chien, Hailey Child, Wan-Long Chuang, Laura E. Cisneros Garza, Barbara Coco, Carla S. Coffin, Nicola Coppola, Markus Cornberg, Antonio Craxi, Javier Crespo, Liri Cuko, Victor De Ledinghen, Ann-Sofi Duberg, Sofia Ribeiro, Et al.

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Background & Aims: Hepatitis delta virus (HDV) is a satellite RNA virus that requires the hepatitis B virus (HBV) for assembly and propagation. Individuals infected with HDV progress to advanced liver disease faster than HBV-monoinfected individuals. Recent studies have estimated the global prevalence of anti-HDV antibodies among the HBV-infected population to be 5-15%. This study aimed to better understand HDV prevalence at the population level in 25 countries/territories. Methods: We conducted a literature review to determine the prevalence of anti-HDV and HDV RNA in hepatitis B surface antigen (HBsAg)-positive individuals in 25 countries/territories. Virtual meetings were held with experts from each setting to discuss the findings and collect unpublished data. Data were weighted for patient segments and regional heterogeneity to estimate the prevalence in the HBV-infected population. The findings were then combined with The Polaris Observatory HBV data to estimate the anti-HDV and HDV RNA prevalence in each country/territory at the population level. Results: After adjusting for geographical distribution, disease stage and special populations, the anti-HDV prevalence among the HBsAg+ population changed from the literature estimate in 19 countries. The highest anti-HDV prevalence was 60.1% in Mongolia. Once adjusted for the size of the HBsAg+ population and HDV RNA positivity rate, China had the highest absolute number of HDV RNA+ cases. Conclusions: We found substantially lower HDV prevalence than previously reported, as prior meta-analyses primarily focused on studies conducted in groups/regions that have a higher probability of HBV infection: tertiary care centers, specific risk groups or geographical regions. There is large uncertainty in HDV prevalence estimates. The implementation of reflex testing would improve estimates, while also allowing earlier linkage to care for HDV RNA+ individuals. The logistical and economic burden of reflex testing on the health system would be limited, as only HBsAg+ cases would be screened.
Original languageEnglish
Pages (from-to)232-242
Number of pages11
JournalJournal of Hepatology
Volume80
Issue number2
DOIs
Publication statusPublished - 1 Feb 2024

Keywords

  • NUTRITION EXAMINATION SURVEY
  • B-VIRUS
  • RISK-FACTORS
  • NATIONAL-HEALTH
  • DRUG-USERS
  • INFECTION
  • SEROPREVALENCE
  • EPIDEMIOLOGY
  • ANTIBODY

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