Vaccination against histomonosis prevents a drop in egg production in layers following challenge

Studies on Egg Drop Syndrome in Iran

Evaluation of egg production in layers using random regression models.

The objectives of this study were to estimate genetic parameters for egg production over the age trajectory in 3 layer lines, which represent different biotypes for egg production, and to validate the use of breeding values for slope as a measure of persistency to be used in the selection program. Egg production of more than 26,000 layers per line from 6 consecutive generations were analyzed wi...

Neutralizing Antibody Response in Cattle Following Vaccination against Foot-and-Mouth Disease

Early Potent Protection against Heterologous SIVsmE660 Challenge Following Live Attenuated SIV Vaccination in Mauritian Cynomolgus Macaques

BACKGROUND Live attenuated simian immunodeficiency virus (SIV) vaccines represent the most effective means of vaccinating macaques against pathogenic SIV challenge. However, thus far, protection has been demonstrated to be more effective against homologous than heterologous strains. Immune correlates of vaccine-induced protection have also been difficult to identify, particularly those measurab...

Occupational Stress Suppress Production of Anti-HBsAg Antibody in Nurse Staffs Following Hepatitis B Vaccination

Background and Objectives: Vaccination is the major strategy to protect nurses against infection with hepatitis B virus. However, some nurses do not produce sufficient amount of anti-HBsAg antibody required for immunity against infection. Chronic occupational stress has been proposed as a risk factor to humoral immunity. Given that nursing staff is exposed to occupational stress risk, this stud...