|
1
|
Montecillo AD, Baybay ZK, Ferrer JBC, Cariaso W, Pantua A, Jose JP, Madera R, Shi J, Doysabas KC, Dargantes A, Dargantes KAT, Boongaling ARA, Manglicmot AP, Villegas LC, Pantua HD. Genetic Profiles of Ten African Swine Fever Virus Strains from Outbreaks in Select Provinces of Luzon, Visayas, and Mindanao, Philippines, Between 2021 and 2023. Viruses 2025; 17:588. [PMID: 40285030 PMCID: PMC12031577 DOI: 10.3390/v17040588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2025] [Revised: 04/07/2025] [Accepted: 04/17/2025] [Indexed: 04/29/2025] Open
Abstract
An African Swine Fever (ASF) outbreak was first recorded in the Philippines in July 2019. Since then, the disease has spread across provinces in Luzon, Visayas, and Mindanao, causing severe economic consequences for the country's swine industry. Here, we report the genome sequencing of ASF virus strains from outbreaks in several provinces of the Philippines between 2021 and 2023, using a long-read tiled amplicon sequencing approach. The coding-complete genomes generated ranged from 187,609 to 189,540 bp in length, with GC contents of 38.4% to 38.5%. Notably, a strain from the Bataan province had a 1.9 kb deletion at the 5'-end, affecting several coding regions. The strains were characterized using 13 genes and regions; namely the B646L gene, the CD2v serogroup, the central variable region (CVR) of the B602L gene, the intergenic region (IGR) between the I73R and I329L genes, the IGR between A179L and A137R, O174L, K145R, Bt/Sj, J268L, and ECO2, the multigene family (MGF) 505-5R, and the MGF 505-9R and 10R regions. The ASFV strains were mostly related to Asian and European p72 genotype II strains. Genetic profiling provides valuable information on the diversity of local strains of ASFV in the Philippines, which are useful for epidemiology, diagnostics, and vaccine development.
Collapse
Affiliation(s)
- Andrew D. Montecillo
- BioAssets Corporation, City of Santo Tomas 4234, Batangas, Philippines; (Z.K.B.); (J.B.C.F.); (W.C.); (A.P.)
- Institute of Biological Sciences, University of the Philippines Los Baños, Laguna 4031, Philippines;
| | - Zyne K. Baybay
- BioAssets Corporation, City of Santo Tomas 4234, Batangas, Philippines; (Z.K.B.); (J.B.C.F.); (W.C.); (A.P.)
| | | | - Wreahlen Cariaso
- BioAssets Corporation, City of Santo Tomas 4234, Batangas, Philippines; (Z.K.B.); (J.B.C.F.); (W.C.); (A.P.)
| | - Airish Pantua
- BioAssets Corporation, City of Santo Tomas 4234, Batangas, Philippines; (Z.K.B.); (J.B.C.F.); (W.C.); (A.P.)
| | - John Paulo Jose
- Industrial Technology Development Institute, Department of Science and Technology (DOST-ITDI), Bicutan, Taguig City 1631, Philippines;
| | - Rachel Madera
- Center on Vaccine Evaluation and Alternatives for Antimicrobials, Kansas State University, Manhattan, KS 66506, USA (J.S.)
| | - Jishu Shi
- Center on Vaccine Evaluation and Alternatives for Antimicrobials, Kansas State University, Manhattan, KS 66506, USA (J.S.)
| | - Karla Cristine Doysabas
- College of Veterinary Medicine, Central Mindanao University, Maramag, Bukidnon 8710, Philippines; (K.C.D.); (A.D.); (K.A.T.D.)
| | - Alan Dargantes
- College of Veterinary Medicine, Central Mindanao University, Maramag, Bukidnon 8710, Philippines; (K.C.D.); (A.D.); (K.A.T.D.)
| | - Kassey Alsylle T. Dargantes
- College of Veterinary Medicine, Central Mindanao University, Maramag, Bukidnon 8710, Philippines; (K.C.D.); (A.D.); (K.A.T.D.)
| | - Anna Rochelle A. Boongaling
- Provincial Veterinary Office of Oriental Mindoro, Calapan City 5200, Oriental Mindoro, Philippines; (A.R.A.B.); (A.P.M.)
| | - Alfredo P. Manglicmot
- Provincial Veterinary Office of Oriental Mindoro, Calapan City 5200, Oriental Mindoro, Philippines; (A.R.A.B.); (A.P.M.)
| | - Lucille C. Villegas
- Institute of Biological Sciences, University of the Philippines Los Baños, Laguna 4031, Philippines;
| | - Homer D. Pantua
- BioAssets Corporation, City of Santo Tomas 4234, Batangas, Philippines; (Z.K.B.); (J.B.C.F.); (W.C.); (A.P.)
- Institute of Biological Sciences, University of the Philippines Los Baños, Laguna 4031, Philippines;
| |
Collapse
|