Application of RT-PCR as a rapid and accurate quality assurance tool for quantification of Rift Valley Fever virus vaccinal strain | ||||
| Suez Canal Veterinary Medical Journal. SCVMJ | ||||
| Articles in Press, Accepted Manuscript, Available Online from 20 December 2024 | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/scvmj.2024.340585.1188 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Noha Ezz -eldeen Elsayed  1; marwa Yehia Hammad 2; Eman Reda Mohamed 3; Sara Ahmed El Sawy 4; Doaa Amer Ibrahim 3; Taradi Abd El-Fattah Said2
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| 1Rift Valley Fever Vaccine department, Veterinary Serum and Vaccines Research Institute (VSVRI), Agriculture Research Center (ARC), Cairo, Egypt. | ||||
| 2Rift Valley Fever Vaccine department, Veterinary Serum and Vaccines Research Institute (VSVRI), Agriculture Research Center (ARC), Cairo, Egypt. | ||||
| 3Quality control laboratory , Veterinary Serum and Vaccines Research Institute (VSVRI), Agriculture Research Center (ARC), Cairo, Egypt. | ||||
| 4Central Laboratory for Evaluation of Veterinary Biologics (CLEVB), Cairo, Egypt.Agriculture Research Center (ARC), Cairo, Egypt. | ||||
| Abstract | ||||
| The Rift Valley fever virus (RVFV) is a zoonotic disease that is spread by mosquitoes. The potential effects of Rift valley fever virus (RVFV) on both public health and agriculture have led the CDC and the USDA to designate it as a Category "A" priority disease that overlaps with select agents. Vaccination plays a significant role in controlling RVF, as it does with other viral infections. Rapid and sensitive quality assurance procedures tailored to the vaccination strain are crucial for ensuring the vaccine performs as expected. In light of the difficulties caused by the present outbreaks, these protocols will prove useful. Using real-time PCR with SYBR Green and low ROX, this work attempted to produce a more accurate and efficient procedure for measuring the Rift Valley Fever vaccinal strain than the traditional tissue culture-based titration method. The amount of virus in the vaccinal strain and seven different samples of RVFV ZH-501 were measured using both the usual tissue culture method and real-time PCR. Afterwards, we contrasted the outcomes. The Real-time -PCR standard curve that was created displays the mean CT values, the linear equation (y = -3.4639x + 38.506) and the r-squared value (0.996). A correlation coefficient of 0.996 indicated that the amplification was 94.4 percent effective. Results from the the Real-time -PCR were comparable to those from tissue culture titration, and there was no statistically significant difference (p > 0.05). In cases of viral quantification, the results showed that the real-time PCR assay is the way to go because it is quick, easy, accurate, simple, and cheap. | ||||
| Keywords | ||||
| RVFV; Virus quantification; Real time PCR; Sybergreen | ||||
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