Update on diagnosis, management, and prevention of hepatitis B virus infection

F J Mahoney1

  • 1Office of the Director, National Centers for Infectious Diseases, Centers for Disease Control and Prevention, U.S. Naval Medical Research Unit no. 3, Cairo, Egypt.MahoneyF@namru3.navy.mil

Insights

Hepatitis B vaccination programs are successfully reducing chronic hepatitis B virus (HBV) infection rates and liver cancer incidence in children globally. Widespread vaccination is a key strategy for preventing liver disease and its fatal outcomes.

Area of Science:

  • Hepatology
  • Virology
  • Public Health

Background:

  • Hepatitis B virus (HBV) infection is a major global cause of liver disease, leading to approximately 1 million deaths annually.
  • An estimated 350 million people worldwide are chronically infected with HBV.
  • Recent advancements have improved understanding of HBV molecular virology and pathogenesis, alongside developing effective treatments.

Purpose of the Study:

  • To highlight the global significance of HBV infection as a cause of liver disease.
  • To emphasize the progress in understanding HBV and its treatment.
  • To underscore the importance of HBV prevention through vaccination.

Main Methods:

  • Review of global HBV infection prevalence and mortality data.
  • Analysis of the impact of hepatitis B vaccine introduction into national immunization programs.
  • Examination of reported reductions in chronic HBV infection and liver cancer incidence in vaccinated populations.

Main Results:

  • Significant reductions in chronic HBV infection prevalence among children have been observed in countries with widespread vaccination.
  • The hepatitis B vaccine was recommended for integration into national immunization programs by 1997.
  • Taiwanese reports show decreased liver cancer incidence in children due to vaccination programs.

Conclusions:

  • Hepatitis B vaccination is a highly effective strategy for preventing chronic HBV infection and reducing liver cancer.
  • Global integration of hepatitis B vaccine into infant immunization schedules is crucial for public health.
  • Continued efforts in HBV prevention are essential to combat liver disease worldwide.

Related Concept Videos

Healthcare Associated Infections II: Preventive Measures01:22

Healthcare Associated Infections II: Preventive Measures

Essential infection prevention measures are based on the knowledge of the infection chain, the modes of transmission in healthcare settings, and the use of the best practices in all healthcare settings. Compulsory public reporting of healthcare-associated infection rates is needed to allow individuals and the community to make informed choices regarding selecting a healthcare facility.
The best practices for preventing healthcare-associated infections include hand hygiene, patient risk...
Pulmonary Tuberculosis V01:28

Pulmonary Tuberculosis V

Medical management of tuberculosis (TB) patients involves a comprehensive approach that includes diagnosis, treatment, and monitoring. The specific strategies can vary depending on the type of tuberculosis (latent or active), the patient's overall health status, and other considerations.
Latent tuberculosis infection occurs when TB bacteria are present in a person's body, but are not causing illness or symptoms. It is not contagious, and preventive treatment is crucial to avoid the progression...
Esophageal Varices-II: Clinical Features and Management01:28

Esophageal Varices-II: Clinical Features and Management

Esophageal varices often manifest as gastrointestinal bleeding episodes, presenting symptoms like hematemesis (vomiting of blood), hematochezia (passing fresh blood via the rectum), and melena (black, tarry stools). Other signs can include weight loss, anorexia, abdominal discomfort, jaundice, pruritus, altered mental status, and muscle cramps.
In the initial assessment, a thorough review of the patient's medical history is vital to identify risk factors such as liver disease, alcohol abuse, or...
Smallpox01:24

Smallpox

Smallpox is a severe contagious disease caused by the Variola major virus, a double-stranded DNA member of the Poxviridae family.Variola major transmission occurs primarily via inhalation of virus-laden droplets or direct contact with infectious scabs. The incubation period averages approximately seven days, although it may range from 7 to 17 days depending on the inoculum and host factors.Clinically, the prodromal phase is marked by an abrupt onset of high fever, malaise, headache, and myalgia.
Hepatitis01:25

Hepatitis

Hepatitis is an inflammatory condition of the liver most commonly caused by hepatotropic viruses (A–E), though non-infectious causes such as alcohol and drugs also exist.Hepatitis AHepatitis A virus (HAV) is a non-enveloped RNA virus of the Picornaviridae family. It is primarily transmitted via the fecal-oral route, typically through ingestion of contaminated food or water. After ingestion, HAV enters the bloodstream through the oropharynx or intestinal epithelium and reaches the liver. The...
Viral Hepatitis I: Introduction01:28

Viral Hepatitis I: Introduction

Viral hepatitis is an inflammatory condition of the liver caused by infection with hepatotropic viruses, most commonly hepatitis A, B, C, D, and E. Despite variations in structure and transmission, all viruses mentioned infect hepatocytes and provoke immune responses that can hinder liver function. Additionally, some non-hepatotropic viruses can also lead to hepatic inflammation.Hepatitis A VirusHepatitis A virus (HAV) is transmitted through the fecal–oral route, typically by ingestion of food...