Comparative Clinical Pathology

, Volume 28, Issue 2, pp 447–453 | Cite as

An epidemiological survey of bovine viral diarrhea infection in calves in Egypt with identification of high prevalence of persistent infected animals

  • Samar M. Atwa
  • Younis E. Emad
  • Mohamed Abdo RizkEmail author
  • Mohamed El-Beskawy
  • Sayed M. Zeidan
Original Article


In the present study, we identified the persistent infection by bovine viral diarrhea virus (BVDV) in 45 clinically suspected persistent infected (PI) calves and 260 apparently healthy calves from Damietta governorate (North) in Egypt during 2016 using enzyme-linked immunosorbent assay (ELISA), serum neutralization test (SNT), immunohistochemistry (IHC), and reverse transcription polymerase chain reaction (RT-PCR). The identification of PI calves was performed after vaccination by CattleMaster® 4. The age of PI calves in the current study was ranged from 2 to 4 months (n = 7) and from 5 to 8 months (n = 38). ELISA revealed the infection in 4 clinically suspected PI calves (57.14%) aged 2 to 4 months. While the infection did not approve in any of the calves within this age using RT-PCR, for calves aged from 5 to 8 months old, ELISA showed the infection in 30 calves (78.94%), and from these calves, the infection was confirmed in 6 calves (15.79%) only using RT-PCR. For apparently clinically healthy animals, 11 transiently infected calves were identified by IHC (positive), SNT (positive), and RT-PCR (negative) at 2 months’ post-vaccination. Collectively, the persistent infection was confirmed in 9 calves (2.95%) out of 305 calves. In summary, our study detected a high prevalence of PI calves with BVDV in Damietta province in Egypt, which highlights the importance of introducing effective prevention and control strategies throughout Egypt to minimize the prevalence of BVDV.


Calves Persistent infection Bovine viral diarrhea Egypt 



The authors would like to thank owners of the farms used in this study in Egypt.

Author contribution

Conceived and designed the experiments: SMA, YEE, MAR. Performed the experiments: SMA, MAR, MEB, SMZ. Analyzed the data: SMA, YEE, MAR. Wrote the paper: SMA, MAR. All authors revised and approved manuscript submission.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no competing interests.

Statement of animal rights

All Institutional and National Guidelines for the care and use of animals were followed according to the Egyptian Medical Research Ethics Committee (No. 14–126).


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Copyright information

© Springer-Verlag London Ltd., part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Internal Medicine and Infectious Diseases, Faculty of Veterinary MedicineMansoura UniversityMansouraEgypt
  2. 2.Veterinary Serum and Vaccine Research InstituteAbbasiaEgypt

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