Investigation the longevity of hepatitis B surface antibody in vaccinated students of Hormozgan university of medical sciences.

Background And Objectives: Hepatitis B is a common chronic viral infection in humans. Universal use of hepatitis B vaccine is crucial for controlling the infection, but the duration of vaccine-induced immunity remains uncertain. This study aimed to assess hepatitis B antibody levels (anti-HBs) after vaccination in infancy and adolescence, and explore the relationship between immunity levels and variables such as age, sex, BMI, place of birth, and duration since last vaccination among students at Hormozgan University of Medical Sciences from 2019 to 2021.

Prevalence of Intestinal Parasites in Food Handlers of Bandar Abbas, Southern Iran.

Background: Food handlers play a significant role in the dissemination and transmission of enteropathogenic microorganisms, including intestinal parasites. The aim of this study was to determine the prevalence of intestinal parasites in food handlers of Bandar Abbas, southern Iran.

Methods: In this cross-sectional study, 800 stool samples were randomly collected in a period of 6 months from Jun to Nov 2015.

Prevalence of intestinal parasitic infection among primary school children in southern Iran.

A cross-sectional study was carried out to determine the prevalence of intestinal parasites in primary school children in Bandar Abbas, southern Iran during January to March 2016. Single stool samples were collected from 1465 participants by clean stool cup. The questionnaire was prepared on the basis of demographic characteristics.