Publications by authors named "Sarah Gamal Yousef"
Seroprevalence and risk factors of infectious bovine rhinotracheitis in cattle in Gharbia governorate, Egypt: A comparative study of traditional and commercial production systems.
Open Vet J
November 2024
Background: Infectious bovine rhinotracheitis (IBR) is a global contagious respiratory disease of ruminants caused by Bovine Herpes virus-1 (BoHV-1). It causes substantial financial losses in the dairy industry worldwide and is considered one of the most important causative agents of abortion and reproductive problems in dairy cattle.
Aim: This study aimed to estimate the seroprevalence of IBR and the related risk factors in the dairy population in Gharbia governorate, Egypt.
Article Synopsis
- - The study investigates the immune response triggered by two types of vaccines—an inactivated vaccine (CATTLEWIN-5K) and a modified live vaccine (MLV, Cattle Master Gold FP)—against bovine respiratory disease (BRD) in seronegative heifers.
- - Twenty heifers were divided into three groups: a control group (no vaccination) and two vaccinated groups receiving either the MLV or inactivated vaccine. The immune response was measured by analyzing the expression of interleukin-6 (IL-6) and interferon-gamma (INF-γ) at various days post-vaccination.
- - Results showed that both vaccines upregulated IL-6 and INF-γ levels, with
Article Synopsis
- Bovine babesiosis poses significant challenges for animal health and profitability, making it crucial to understand its epidemiology and associated risk factors.
- A study in Sharkia governorate analyzed blood samples from 352 animals to determine the seroprevalence of two Babesia species using ELISA and statistical models.
- Findings showed higher infection rates in older males and tick-infested animals, indicating that age, sex, and tick presence are critical risk factors, while seasonal changes did not significantly affect seroprevalence.
Peste des petits ruminants (PPR) is a contagious viral disease causing massive economic loss to animal industries in endemic countries including Egypt. Although a vaccine is available, coinfections can overwhelm the animal immune system and interfere with vaccine protection. Small ruminant retrovirus (SRR), including enzootic nasal tumor virus (ENTV) and Jaagsiekte sheep retrovirus (JSRV), is responsible for coinfections with PPR.
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