Infectious bovine rhinotracheitis (IBR), is a contagious disease in cattle. Bovine Herpes Virus-1 (BoHV-1) is one of the most common viral infections in cattle throughout the world. It'shighly contagious and most commonly found in cattle herds. During the year 2021, a cross-sectional study was conducted to assess seroprevalence and risk factors related to bovineherpesvirus-1. A total of 300 serum samples were collected from cattle raising in threegovernorates in the Nile Delta region of Egypt and examined using a commercial ELISA kit.The seroprevalence rate of BoHV-1 infection was 30.67%. Multivariable logistic regressionanalysis revealed that the BoHV-1 infection is strongly associated with the species of animal,age, contact with small ruminants, and herd size. However, locality, sex, and purpose of herdshowed non significant effect of prevalence of infection. This study confirmed the presence ofBoHV-1 in Egypt as an endemic disease in dairy and fattening herds and the application of anefficient control program is necessary to control the disease (PDF) Sero-surveillance Infectious Bovine rhinotracheitis in Ruminants and assessment the associated risk factors. Available from: https://www.researchgate.net/publication/366544082_Sero-surveillance_Infectious_Bovine_rhinotracheitis_in_Ruminants_and_assessment_the_associated_risk_factors [accessed Dec 24 2022].