Persistence of Newcastle Disease Virus Genotype II and Shedded Genotype VII in Poultry Farm Environment
Fady Samir1, Rania F. El Naggar2, Mohamed M. Hamoud3, Manal M. Zaki1, Abdulrhman M. Gamal1, Samah E. Laban1, Shaimaa A. E. Nasr1, El Shaimaa Ismael1, Osama K. Zahran1*
1Department of Animal Hygiene and Veterinary Management, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt; 2Department of Virology, Faculty of Veterinary Medicine, University of Sadat City, Sadat, 32897, Egypt; 3Department of Poultry and Rabbit diseases, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt.
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Figure 1
Different coupon surfaces (metal, plastic and cooling pads) used in this study.
Figure 2
Amino acids mutation trend analysis for F protein of field strain velogenic NDV genotype VII in compare to commonly used vaccine strain of Genotypes I and II.
Figure 3
Phylogenetic analysis of the studied NDV isolate genotype VII and their clustering patterns with representative AAvV-1 isolates of each genotype. Reported isolates clustered within genotype VII of class II. The position of clustering is indicated by a yellow box.
Figure 4
Comparison of persistence of Genotypes II and VII on different surfaces A) metal, B) plastic and C) cooling pads of poultry farm environment.