Open Access
Research (Published online: 19-02-2020)
14. Genotyping and phylogenetic analysis of canine parvovirus circulating in Egypt
Kawther Sayed Zaher, Wahid Hussein El-Dabae, Mostafa Mohamed El-Sebelgy, Naglaa Ibrahim Aly and Zeinab Taha Salama
Veterinary World, 13(2): 326-333

Kawther Sayed Zaher: Department of Microbiology and Immunology, Veterinary Research Division, National Research Centre, Dokki 12622, Giza, Egypt.
Wahid Hussein El-Dabae: Department of Microbiology and Immunology, Veterinary Research Division, National Research Centre, Dokki 12622, Giza, Egypt.
Mostafa Mohamed El-Sebelgy: Department of Microbiology and Immunology, Veterinary Research Division, National Research Centre, Dokki 12622, Giza, Egypt.
Naglaa Ibrahim Aly: Department of Pet Animal Vaccine Research, Veterinary Serum and Vaccine Research Institute, Abbasia, Egypt.
Zeinab Taha Salama: Department of Pet Animal Vaccine Research, Veterinary Serum and Vaccine Research Institute, Abbasia, Egypt.

doi: www.doi.org/10.14202/vetworld.2020.326-333

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Article history: Received: 14-07-2019, Accepted: 30-12-2019, Published online: 19-02-2020

Corresponding author: Wahid Hussein El-Dabae

E-mail: dr_wahidhussein@yahoo.com

Citation: Zaher KS, El-Dabae WH, El-Sebelgy MM, Aly NI, Salama ZT (2020) Genotyping and phylogenetic analysis of canine parvovirus circulating in Egypt, Veterinary World, 13(2): 326-333.
Abstract

Aim: This study aimed to detect and characterize current genotypes of canine parvovirus (CPV) in Egypt during 2018.

Materials and Methods: A total of 50 fecal swabs were collected from clinically infected domestic dogs of 2-5 months of age, suspected to suffer from CPV infection, from Cairo and Giza Governorates. The samples were subjected to qualitative antigen detection using the rapid test, followed by isolation on Madin-Darby Canine Kidney (MDCK) cells, molecular characterization with partial amplification of VP2 gene using polymerase chain reaction (PCR), followed by sequencing and phylogenetic analysis.

Results: Out of 50 fecal samples, 20 samples were positive (40%) by Rapid CPV/canine coronavirus Ag Test Kit. These positive samples were cultured successfully on MDCK cells. Nine randomly chosen samples out of 30 apparently negative samples were amplified using PCR with primers Hfor and Hrev to yield a typical 630 bp fragment. Then, six randomly chosen samples out of nine were amplified using PCR with primers Pbs and Pbas to yield a typical 427 bp fragment. Sequencing, BLAST analysis and assembly of the two fragments (630 bp and 427 bp) to produce 912 bp fragments, in the six samples, revealed two serotypes CPV-2b and CPV-2c. The obtained strains were submitted to GenBank and given accession numbers MK642272, MK642273, MK642274, MK642275, MK642276, and MK642277. Phylogenetic analysis of the Egyptian strains serotype 2b illustrated that they were closely related to Thailand strains (accession numbers KP715709, KP715694, KP715701, and KP715700); while Egyptian strains serotype 2c was closely related to Thailand strains (accession numbers MH711894 and MH711902), Taiwanese strain (KU244254), Chinese strain (MF467242), and Vietnamese strain (accession number LC216910).

Conclusion: The current research recommends further epidemiological studies to assess the extent of the occurrence of different serotypes of CPV in Egypt and the efficiency of imported and locally produced vaccines in protection against CPV infection.

Keywords: canine parvovirus, Egypt, genotyping, phylogenetic analysis, serotyping.