Medindia
Advertisement

Hepatitis B Vaccinations Manage To Lower Infection Rates In Catalonia, Spain

by Rishika Gupta on March 14, 2019 at 7:28 PM

Hepatitis B Vaccinations Manage To Lower Infection Rates In Catalonia, Spain

Catalonia, Spain sees a huge decline of 52 percentage in hepatitis B infections. This decline has been found to be a result of hepatitis B vaccination programmes conducted among preteens twenty-one years ago.

The results of this study are published in the journal of Vaccine.

Advertisement


Introducing the Hepatitis B vaccine in preadolescents meant a decline in the disease incidence rate by 52 % according to a study in which the University of Barcelona (UB) took part. The study analyzed the efficiency and impact of the vaccination program set in Catalonia (Spain) twenty-one years ago. The results show that after introducing the program, the incidence rate in general population went from 2.5 per 100,000 people in 1991 to 1.2 per 100,000 people in 2014.

The study, published in the scientific journal Vaccine, counts on the participation of experts from the Research Group on Epidemiology, Prevention and Control of Communicable Diseases of the UB, the Public Health Agency of Catalonia and the Barcelona Public Health Agency, led by Professor Àngela Domínguez, from the Department of Medicine of the UB and the Epidemiology and Public Health Networking Biomedical Research Centre (CIBERESP, Institute of Health Carlos III).
Advertisement

Hepatitis B is a globally important viral disease due its morbidity, mortality and high chronicity in children. Chronicity increases the risk of cirrhosis and hepatocellular carcinoma, and patients with a chronic disease are permanent transmitters of the virus. In 1991, systematic vaccination for Hepatitis B was introduced in Catalonia in preadolescents. "So far, only risk groups were vaccinated, such as those working in the health sector or haemophiliac and haemodialytic patients. However, this type of vaccination was not enough to reduce the incidence", note the researchers.

An efficient program

Researchers studied retrospectively vaccinated and non-vaccinated cohorts, chosen according to their year of birth, as well as cases of Hepatitis B between 2000 and 2014 that were registered by the Sub-Directorate General for Epidemiological Surveillance and Public Health Emergency Response of the Public Health Agency of Catalonia. During that period, they notified about 388 cases of Hepatitis B infection, 232 in the non-vaccinated cohort and 156 in the vaccinated cohort.

The incidence rate was 4.1 per 100,000 people per year in the non-vaccinated group and 0.03 per 100,000 people per year in the vaccinated group. Therefore, the efficiency of the program was 99.30 % and the associated benefit to estimate the prevented fraction was of 64.56 %.

According to the researchers, these results show that "efficiency and impact of the vaccination program for Hepatitis B in preadolescents are high, benefiting the community."

Vaccination in preadolescents was suspended in July 2014, when the first kids who had been vaccinated as children (vaccinated in 2002, aged one) reached preadolescence, so they did not need the vaccine again.

Source: Eurekalert
Advertisement

Advertisement
News A-Z
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
News Category
What's New on Medindia
'Hybrid Immunity' may Help Elude COVID-19 Pandemic
Stroop Effect
Plant-Based Diet may Reduce the Risk of COVID-19
View all

Medindia Newsletters Subscribe to our Free Newsletters!
Terms & Conditions and Privacy Policy.

More News on:
Hepatitis A Hepatitis B Hepatitis B Virus Silent Killer Diseases Liver Flu Aplastic Anemia HBV Screening Hepatitis Needlestick Injuries 

Recommended Reading
Teens Susceptible to Hepatitis B Infection Despite Vaccination as Infants: Research
A significant number of adolescents lose their protection from hepatitis B virus (HBV) infection, .....
Universal Vaccination Wipes Out Hepatitis B in Alaskan Children
Hepatitis B, a serious liver infection is highly contagious and spreads rapidly among young ......
Aplastic Anemia
Aplastic anemia (AA) is a term that refers to a condition where the body fails to produce enough blo...
HBV Screening
Tests used for screening hepatitis B are estimation of hepatitis B surface antigen (HBsAg), anti-HBc...
Hepatitis A
Hepatitis A is the most benign of the hepatitis viruses and usually has no long term side effects. H...
Hepatitis B
Hepatitis B is inflammation of the liver due to infection with the hepatitis B virus....
Needlestick Injuries
A needlestick injury is a common occupational hazard that occurs when the skin has been pierced by a...

Disclaimer - All information and content on this site are for information and educational purposes only. The information should not be used for either diagnosis or treatment or both for any health related problem or disease. Always seek the advice of a qualified physician for medical diagnosis and treatment. Full Disclaimer

© All Rights Reserved 1997 - 2021

This site uses cookies to deliver our services. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Use