---
title: "African swine fever virus recovered from spray-dried porcine plasma used as feed ingredient in Sou"
id: "cdc-emerging-infectious-diseases-journal-1-infectious-african-swine-fever-virus-in-spray-dried-porcine-plasma-used-as-feed"
canonical_url: "https://medichelpline.com/clinical-feed/cdc-emerging-infectious-diseases-journal-1-infectious-african-swine-fever-virus-in-spray-dried-porcine-plasma-used-as-feed"
content_type: "clinical_feed_article"
specialty: "Infectious Disease"
source_name: "CDC Emerging Infectious Diseases Journal"
source_url: "https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article"
published_at: "2026-10-19T04:00:00.000Z"
evidence_level: "Agency Feed"
license: "CC-BY-NC-4.0 / Informational Use"
---
# African swine fever virus recovered from spray-dried porcine plasma used as feed ingredient in Sou
## Provenance & Clinical Metadata
- **Canonical URL:** https://medichelpline.com/clinical-feed/cdc-emerging-infectious-diseases-journal-1-infectious-african-swine-fever-virus-in-spray-dried-porcine-plasma-used-as-feed
- **Specialty:** [Infectious Disease](https://medichelpline.com/clinical-feed/infectious-disease.md)
- **Primary Source:** CDC Emerging Infectious Diseases Journal
- **Source URL:** [Original Journal Publication](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article)
- **Published At:** 2026-10-19T04:00:00.000Z
- **Evidence Rating:** Agency Feed
## Executive GIST (TL;DR)
- Investigators detected **ASFV** DNA in feed and spray-dried porcine plasma (**SDPP**) samples collected from outbreak farms in South Korea during early 2026; two SDPP and two commercial compound feed (CF) samples were PCR-positive. - The study team processed 72 SDPP and 219 CF samples; initial virus isolation attempts from those feed samples using primary porcine alveolar macrophages were unsuccessful. - In an experimental challenge, 9 four-week-old Landrace pigs were randomized into three groups: SDPP-inoculated (intramuscular), CF-fed (200 g/day for 30 days), and negative controls (three pigs per group). - The SDPP group received a 50% wt/vol suspension intramuscularly; this detail was reported by the authors. CF-fed animals received the PCR-positive compound feeds ad libitum per protocol described in the source. - All three SDPP-inoculated pigs developed fever by 5–6 days postchallenge, showed progressive clinical signs (lethargy, anorexia, huddling, depression), and died with mean time to death 8.0 ±0.8 dpc; viremia and oral/rectal shedding were detected from 4 dpc onward. - Necropsy of SDPP-inoculated pigs revealed splenomegaly, hemorrhagic infarction, and hemorrhagic lymphadenopathy; tissues with gross lesions were PCR-positive for **ASFV** DNA. - Pigs in the CF-fed and control groups remained clinically stable and tested negative throughout the experimental period. - Investigators recovered viable virus from spleen homogenates of SDPP-inoculated pigs and generated a whole-genome sequence, ASFV/Korea/SDPP/2026 (GenBank PZ617907). - Genomic analysis assigned the virus to p72 genotype II and IGR type I; the genome shared 99.98% nucleotide identity with a 2025 Korean farm strain (ASFV/Korea/pig/Dangjin/2025). - The isolate carried characteristic indels in MGF regions; the authors noted that most prior South Korea isolates were IGR type II, making these IGR type I isolates genetically notable. - Data indicated a plausible feed-associated transmission route in at least some outbreak investigations; the authors called for strengthened risk management of animal-derived feed ingredients such as **SDPP**. - The source did not report dose-ranging data for oral infectivity of SDPP, nor did it provide detailed thermal or chemical inactivation parameters for the implicated SDPP batch beyond the experimental inoculation and feeding procedures.
## Clinical Analysis & Structured Key Points
[Skip directly to page options](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article#share-nav) [Skip directly to A-Z link](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article#az-large) ![](https://wwwnc.cdc.gov/TemplatePackage/4.0/assets/imgs/uswds/us_flag_small.png) An official website of the United States government Here's how you know ![](https://wwwnc.cdc.gov/TemplatePackage/4.0/assets/imgs/uswds/icon-dot-gov.svg) **Official websites use .gov** A .gov website belongs to an official government organization in the United States. ![](https://wwwnc.cdc.gov/TemplatePackage/4.0/assets/imgs/uswds/icon-https.svg) **Secure .gov websites use HTTPS** A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites. [CDC Home](https://wwwnc.cdc.gov/) [ ![Centers for Disease Control and Prevention](https://wwwnc.cdc.gov/TemplatePackage/5.0/img/logo/cdc-logo-tag-right.svg) ](https://www.cdc.gov/) Emerging Infectious Diseases ![](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article) [A-Z Index](https://www.cdc.gov/az/) × Submit [A-Z Index](https://www.cdc.gov/az/) × Submit [A-Z Index](https://www.cdc.gov/az/) Search Dropdown × Submit Emerging Infectious Diseases * [About the Journal](https://wwwnc.cdc.gov/eid/about) * [ BACK ](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article) **About the Journal** * [General Information](https://wwwnc.cdc.gov/eid/about/general) * [ BACK ](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article) **General Information** * [ BACK ](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article) **About the Journal****General Information** * [Background and Goals](https://wwwnc.cdc.gov/eid/about/background) * [Editors](https://wwwnc.cdc.gov/eid/about/editors) * [Editorial Board](https://wwwnc.cdc.gov/eid/about/editorial-board) * [Staff](https://wwwnc.cdc.gov/eid/about/staff) * [ Home](https://wwwnc.cdc.gov/) * [Contact](https://wwwnc.cdc.gov/eid/contact) * [EID Journal Report 2025](https://wwwnc.cdc.gov/eid/pdfs/JournalReport_2025.pdf) * [ Home](https://wwwnc.cdc.gov/) * [Articles](https://wwwnc.cdc.gov/eid/) * [ BACK ](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article) **Articles** * [October 2026](https://wwwnc.cdc.gov/eid/current) * [Wastewater Surveillance](https://wwwnc.cdc.gov/eid/articles/issue/32/13/table-of-contents) * [Early Release](https://wwwnc.cdc.gov/eid/early-release) * [ BACK ](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article) **Early Release** * [ BACK ](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article) **Articles****Early Release** * [Infectious African Swine Fever Virus in Spray-Dried Porcine Plasma Used as Feed Ingredient, South Korea, 2026](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article) * [ BACK ](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article) **Infectious African Swine Fever Virus in Spray-Dried Porcine Plasma Used as Feed Ingredient, South Korea, 2026** * [ BACK ](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article) **Early Release****Infectious African Swine Fever Virus in Spray-Dried Porcine Plasma Used as Feed Ingredient, South Korea, 2026** * [ BACK ](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article) **Articles****Early Release****Infectious African Swine Fever Virus in Spray-Dried Porcine Plasma Used as Feed Ingredient, South Korea, 2026** * [Figure 1](https://wwwnc.cdc.gov/eid/article/32/12/26-1380-f1) * [Figure 2](https://wwwnc.cdc.gov/eid/article/32/12/26-1380-f2) * [Appendix](https://wwwnc.cdc.gov/eid/article/32/12/26-1380-app1.pdf) * [ Home](https://wwwnc.cdc.gov/) * [ Home](https://wwwnc.cdc.gov/) * [Past Issues](https://wwwnc.cdc.gov/eid/past-issues/volume-32) * [Medscape CME](https://wwwnc.cdc.gov/eid/articles/cme) * [ICEID](https://wwwnc.cdc.gov/eid/page/iceid) * [ Home](https://wwwnc.cdc.gov/) * [Search](https://wwwnc.cdc.gov/eid/Search) * [ BACK ](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article) **Search** * [Advanced Article Search](https://wwwnc.cdc.gov/eid/AdvancedSearch) * [Articles by Country Search](https://wwwnc.cdc.gov/eid/ArticleMap) * [Spotlight Topics](https://wwwnc.cdc.gov/eid/spotlight) * [ BACK ](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article) **Spotlight Topics** * [ BACK ](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article) **Search****Spotlight Topics** * [Antimicrobial Resistance Spotlight](https://wwwnc.cdc.gov/eid/spotlight/antimicrobial-resistance) * [Coronavirus Spotlight](https://wwwnc.cdc.gov/eid/spotlight/coronavirus) * [Ebola Spotlight](https://wwwnc.cdc.gov/eid/spotlight/ebola) * [Etymologia](https://wwwnc.cdc.gov/eid/articles/etymologia) * [Foodborne Diseases and Outbreaks Spotlight](https://wwwnc.cdc.gov/eid/spotlight/foodborne-diseases) * [Fungal Diseases](https://wwwnc.cdc.gov/eid/spotlight/fungal) * [Hantavirus Spotlight](https://wwwnc.cdc.gov/eid/spotlight/hantavirus) * [HIV/AIDS Spotlight](https://wwwnc.cdc.gov/eid/spotlight/hiv) * [Influenza Spotlight](https://wwwnc.cdc.gov/eid/spotlight/influenza) * [Lyme Disease Spotlight](https://wwwnc.cdc.gov/eid/spotlight/lyme-disease) * [Malaria Spotlight](https://wwwnc.cdc.gov/eid/spotlight/malaria) * [MERS Spotlight](https://wwwnc.cdc.gov/eid/spotlight/mers) * [Mpox Spotlight](https://wwwnc.cdc.gov/eid/spotlight/mpox) * [Pneumonia Spotlight](https://wwwnc.cdc.gov/eid/spotlight/pneumonia) * [Rabies Spotlight](https://wwwnc.cdc.gov/eid/spotlight/rabies) * [Ticks Spotlight](https://wwwnc.cdc.gov/eid/spotlight/ticks) * [Tuberculosis/Mycobacteria](https://wwwnc.cdc.gov/eid/spotlight/tuberculosis) * [Zika Spotlight](https://wwwnc.cdc.gov/eid/spotlight/zika) * [ Home](https://wwwnc.cdc.gov/) * [Article Type Search](https://wwwnc.cdc.gov/eid/ArticleTypeSearch) * [EID on PubMed Central](https://www.ncbi.nlm.nih.gov/pmc/journals/782/) * [ Home](https://wwwnc.cdc.gov/) * [Subscribe](https://wwwnc.cdc.gov/eid/subscriptions) * [Author Resource Center](https://wwwnc.cdc.gov/eid/page/author-resource-center) * [Peer Reviewers](https://wwwnc.cdc.gov/eid/reviewers) * [Podcasts](https://wwwnc.cdc.gov/eid/podcasts) * [ BACK ](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article) **Podcasts** * [Search](https://wwwnc.cdc.gov/eid/podcasts/search) * [ Home](https://wwwnc.cdc.gov/) * [Social Media](https://wwwnc.cdc.gov/eid/page/social-media) * [ Press & Media Information](https://wwwnc.cdc.gov/eid/press) * [ Home](https://wwwnc.cdc.gov/) 1. [EID Journal](https://wwwnc.cdc.gov/eid/) 2. [Volume 32](https://wwwnc.cdc.gov/eid/early-release) 3. [Early Release](https://wwwnc.cdc.gov/eid/early-release#issue-1348) 4. [Main Article](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article) * [Facebook](https://www.facebook.com/sharer/sharer.php?u=%2Feid%2Farticle%2F32%2F12%2F26-1380_article "Share to Facebook") * [Twitter](http://twitter.com/share?url=%2Feid%2Farticle%2F32%2F12%2F26-1380_article&text= "Share to Twitter") * [LinkedIn](https://www.linkedin.com/shareArticle?url=%2Feid%2Farticle%2F32%2F12%2F26-1380_article&title= "Share to LinkedIn") * [Syndicate](https://tools.cdc.gov/medialibrary/index.aspx#/sharecontent//eid/article/32/12/26-1380_article "Embed this Page") [ Emerging Infectious Disease journal ISSN: 1080-6059 ](https://wwwnc.cdc.gov/eid/) _Disclaimer: Early release articles are not considered as final versions. Any changes will be reflected in the online version in the month the article is officially released._ #### Volume 32, Number 12—December 2026 ##### _Dispatch_ ### Infectious African Swine Fever Virus in Spray-Dried Porcine Plasma Used as Feed Ingredient, South Korea, 2026 On This Page [The Study](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article) * * * [Conclusions](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article) * * * [Suggested Citation](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article) Figures [Figure 1](https://wwwnc.cdc.gov/eid/article/32/12/26-1380-f1) * * * [Figure 2](https://wwwnc.cdc.gov/eid/article/32/12/26-1380-f2) Downloads [Appendix ](https://wwwnc.cdc.gov/eid/article/32/12/26-1380-app1.pdf) * * * [RIS [TXT - 2 KB] ](https://wwwnc.cdc.gov/eid/article/32/12/26-1380.ris) Article Metrics [Metric Details](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article) Seong-Keun Hong[1](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article#fn1), Jung-Hoon Kwon[1](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article#fn1), Da-Won Kim, Hae-Eun Kang, and Yeon-Hee Kim[![Comments to Author](https://wwwnc.cdc.gov/eid/content/images/icon/email.gif)](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article#comment) Author affiliation: Animal and Plant Quarantine Agency, Gimcheon, South Korea (S.-K. Hong, H.-E. Kang, Y.-H. Kim); Kyungpook National University, Daegu, South Korea (J.-H. Kwon, D.-W. Kim) [Suggested citation for this article](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article#suggestedcitation) ### Abstract We detected African swine fever virus DNA in feed and spray-dried porcine plasma (SDPP) used as a feed ingredient in South Korea. Pigs inoculated with SDPP developed fatal infection. An isolate phylogenetically clustered with South Korea strains. Our findings highlight the need for strengthened risk management of animal-derived feed ingredients like SDPP. African swine fever (ASF), caused by ASF virus (ASFV), is a highly contagious and fatal hemorrhagic disease of domestic pigs and wild boars across Eurasia ([_1_](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article#r1 "1")). In Africa, soft ticks (_Ornithodoros_ spp.) act as biological vectors, whereas wild suids serve as asymptomatic reservoirs ([_2_](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article#r2 "2")). In Eurasia, ASFV is primarily maintained and spread by wild boars, although transmission also occurs through contaminated pork products and swill feeding ([_3_](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article#r3 "3"),[_4_](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article#r4 "4")). Because of its environmental stability, ASFV remains infectious in meat and blood for weeks to months ([_5_](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article#r5 "5")). Since its introduction from Africa into the country of Georgia in 2007 ([_6_](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article#r6 "6")), ASFV has spread throughout Eastern Europe and Russia and subsequently into Asia ([_4_](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article#r4 "4"),[_6_](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article#r6 "6")). ASFV outbreaks were reported in China in 2018 and Mongolia in early 2019; rapid spread across Asia followed ([_4_](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article#r4 "4"),[_6_](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article#r6 "6")). In South Korea, after the first outbreak in Paju in 2019 ([_6_](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article#r6 "6")), ASFV had been detected in 79 domestic pig farms by March 2026, affecting ≈345,000 pigs ([_7_](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article#r7 "7")). Before 2026, ASF outbreaks on domestic pig farms in South Korea occurred sporadically, and only a small number of outbreaks were reported each year. However, an unprecedented number of outbreaks occurred during January–March 2026, affecting 24 domestic pig farms. Epidemiologic investigations linked some affected farms to ASFV DNA–positive feed, whereas other farms had potential risk factors such as wild boar exposure and illegal livestock products ([_8_](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article#r8 "8")). The investigations detected ASFV DNA in commercial compound feed (CF) and in spray-dried porcine plasma (SDPP), which is produced from slaughterhouse blood and used as a feed ingredient because of its high nutritional value and beneficial effects on growth ([_9_](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article#r9 "9")). The ASFV DNA–positive CF was produced by a feed manufacturer using SDPP from the same batch as the ASFV DNA–positive SDPP. We experimentally administered ASFV DNA–positive SDPP and CF samples to pigs to determine if the compounds could cause disease and genetically characterized the virus to identify its origin. ### The Study We tested SDPP (n = 72) and CF (n = 219) samples collected from ASF outbreak pig farms in South Korea for ASFV at the Animal and Plant Quarantine Agency (Gimcheon, South Korea). In brief, we suspended 5 g of each sample in phosphate-buffered saline (PBS) for DNA extraction and real-time PCR. On February 19, 2026, we detected ASFV DNA in 2 SDPP samples (cycle threshold [Ct] values 28.48 and 31.18). On February 24, 2026, we also detected ASFV DNA in 2 commercial CFs produced using SDPP and stored at a pig farm (Ct values 35.97 and 37.71) ([Appendix](https://wwwnc.cdc.gov/eid/article/32/12/26-1380-app1.pdf) Table 1). However, virus isolation using primary porcine alveolar macrophages, as previously described ([_10_](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article#r10 "10")), was unsuccessful. For the experiment, we used 9 healthy 4-week-old Landrace pigs from a commercial pig farm; blood samples from all pigs tested as previously described ([_10_](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article#r10 "10")) were negative for ASFV and other swine pathogens. We housed the pigs in separate isolators within the Animal Biosafety Level 3 facility of the Animal and Plant Quarantine Agency under approved institutional protocols. We randomly assigned pigs to 3 experimental groups (n = 3 per group): an SDPP inoculation group, a CF-fed group, and a negative control group ([Appendix](https://wwwnc.cdc.gov/eid/article/32/12/26-1380-app1.pdf) Table 2). We prepared a 50% wt/vol ASFV-positive SDPP suspension in sterile PBS and filtered through a 0.45-µm syringe filter to remove bacterial contaminants. We then inoculated each pig in the SDPP group intramuscularly with 1 mL of the SDPP suspension. We provided pigs in the CF-fed group with 200 g of the 2 ASFV-positive CFs 1 time/day for 30 days. We monitored clinical signs and body temperature and performed necropsies on pigs that died. We tested viral shedding by real-time PCR using swab samples and viremia using blood samples, as previously described ([_10_](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article#r10 "10")). Figure 1 ![Clinical characterization of pigs experimentally infected in investigation of African swine fever virus in SDPP used as feed ingredient, South Korea, 2026. Nine pigs were divided into 3 groups of 3; 1 group was experimentally inoculated with African swine fever virus DNA–positive SDPP and 1 group was fed commercial CF collected in 2026; the third group was the control. A–C\) Rectal temperatures \(A\), clinical sign scores \(B\), and survival \(C\) for all 3 groups. Gray shading in panel C indicates survival for SDPP animals, all of which died. D\) Viremia in whole blood samples and virus shedding in oral and rectal samples among the SDPP group; all 3 animals in this group died. Error bars indicate SD. CF, compound feed; SDPP, spray-dried porcine plasma.](https://wwwnc.cdc.gov/eid/images/26-1380-F1-tn.jpg) [Figure 1](https://wwwnc.cdc.gov/eid/article/32/12/26-1380-f1 "Figure 1"). Clinical characterization of pigs experimentally infected in investigation of African swine fever virus in SDPP used as feed ingredient, South Korea, 2026. Nine pigs were divided into 3 groups of... Two SDPP-inoculated pigs developed acute pyrexia (body temperature >40.5°C) at 5 days postchallenge (dpc) and a third pig at 6 dpc. Rectal temperatures peaking at 41.2°C shortly before death ([Figure 1](https://wwwnc.cdc.gov/eid/article/32/12/26-1380-f1), panel A). Pyrexia was accompanied by rapidly progressive clinical signs, including severe lethargy, anorexia, huddling, and depression ([Figure 1](https://wwwnc.cdc.gov/eid/article/32/12/26-1380-f1), panel B). All SDPP-inoculated pigs died; mean time to death (+SD) was 8.0 +0.8 dpc ([Figure 1](https://wwwnc.cdc.gov/eid/article/32/12/26-1380-f1), panel C). In the SDPP-inoculated group, we detected viremia in whole blood and viral shedding via the oral and rectal routes from 4 dpc onward; blood samples showed higher viral loads than oral and rectal swab samples ([Figure 1](https://wwwnc.cdc.gov/eid/article/32/12/26-1380-f1), panel D). However, pigs in the CF-fed and control groups remained clinically stable and uninfected throughout the experimental period. In all 3 pigs that died in the SDPP-inoculated group, necropsy revealed severe multiorgan lesions characterized by extensive congestion and systemic hemorrhage. Major pathologic findings included splenomegaly with severe hemorrhagic infarction and enlarged and hemorrhagic mandibular, gastrohepatic, and renal lymph nodes with evident erythema ([Appendix](https://wwwnc.cdc.gov/eid/article/32/12/26-1380-app1.pdf) [Figure 1](https://wwwnc.cdc.gov/eid/article/32/12/26-1380-f1)). We further detected ASFV DNA in examined postmortem tissues; all tissues with gross lesions tested positive ([Appendix](https://wwwnc.cdc.gov/eid/article/32/12/26-1380-app1.pdf) Figure 2). We characterized ASFV DNA detected in SDPP and CF by Sanger sequencing of the _B646L_ (_p72_), _E183L_ (_p54_), and _EP402R_ (_CD2v_) genes; the central variable region of the _B602L_ gene; and the _I73R/I329L_ intergenic region (IGR). The ASFV genomes were assigned to p72 genotype II and carried the IGR-I variant ([Appendix](https://wwwnc.cdc.gov/eid/article/32/12/26-1380-app1.pdf) Figures 3, 4). We isolated viable virus from spleen homogenates of SDPP-inoculated pigs ([Appendix](https://wwwnc.cdc.gov/eid/article/32/12/26-1380-app1.pdf) Figure 5). We determined the whole-genome sequence of the isolate, ASFV/Korea/SDPP/2026 (GenBank accession no. PZ617907), by using next-generation sequencing, as previously described ([_11_](https://wwwnc.cdc.gov/eid/article/32/12/26-1380_article#r11 "11")). The genome shared 99.98% nucleotide identity with ASFV/Korea/pig/Dangjin/2025 (GenBank accession no. PZ617906), a strain detected during an ASF outbreak on a pig farm. The isolate further harbored characteristic insertion/deletion polymorphisms, including a 706-bp deletion across _MGF 110–7L_ and _285L_ within the left variable region and a 9-bp insertion in the _MGF 110–10L_ to _110–14L_ region. Of note, whereas most previously characterized South Korea ASFV isolates belonged to IGR type II, both the Dangjin and SDPP isolates belonged to IGR type I. Figure 2 ![Time-scaled maximum clade credibility tree of the ASFV isolated from pigs inoculated with spray-dried porcine plasma in investigation of African swine fever virus in spray-dried porcine plasma used as feed ingredient, South Korea, 2026. Red indicates the ASFV isolate recovered from the inoculated pig and the reference virus from the Dangjin outbreak farm. The size and color of each node \(circle\) indicate the posterior probability supporting the corresponding monophyletic group. South Korea ASFV isolates were classified into 3 groups according to a previous study \(9\). GenBank accession numbers are shown. Scale bar indicates nucleotide substitutions per site. ASF, African swine fever; ASFV, ASF virus.](https://wwwnc.cdc.gov/eid/images/26-1380-F2-tn.jpg) [Figure 2](https://wwwnc.cdc.gov/eid/article/32/12/26-1380-f2 "Figure 2"). Time-scaled maximum clade credibility tree of the ASFV isolated from pigs inoculated with spray-dried porcine plasma in investigation of African swine fever virus in spray-dried porcine plasma used as feed... After excluding G/C homopolymer regions and inverted ter
## Related Clinical Research

- [HPAI A(H5N1) Clade 2.3.4.4b Genotype B3.13 Infection in Alpacas: Experimental Findings](https://medichelpline.com/clinical-feed/cdc-emerging-infectious-diseases-journal-1-experimental-highly-pathogenic-avian-influenza-a-h5n1-clade-2-3-4-4b-virus.md)
- [Pharmacokinetic variability of baloxavir marboxil among 14 rare avian species](https://medichelpline.com/clinical-feed/plos-one-16-pharmacokinetic-diversity-of-baloxavir-marboxil-across-rare-avian-species.md)
- [Phylogenetic reconstruction error inflates reassortment counts in influenza A virus analyses](https://medichelpline.com/clinical-feed/plos-one-21-assessing-the-impact-of-phylogenetic-reconstruction-error-on-genetic.md)
- [High-dose versus standard-dose quadrivalent influenza vaccine immunogenicity in people living with](https://medichelpline.com/clinical-feed/pubmed-42753388.md) (DOI: 10.1016/j.vaccine.2026.129166)
- [HPV-positive women: sexual function lower after prior LEEP compared with no LEEP](https://medichelpline.com/clinical-feed/pubmed-42912654.md) (DOI: 10.1080/0167482X.2026.2753611)

## Navigation
- [← Back to Infectious Disease Feed](https://medichelpline.com/clinical-feed/infectious-disease.md)
- [← All Clinical Specialties](https://medichelpline.com/clinical-feed.md)
## Medical & Regulatory Disclaimer

> [!CAUTION]
> MedicHelpline content is structured for research, educational, and professional discovery purposes. It does not constitute individual medical advice, clinical diagnosis, or treatment recommendations.
> Always verify dosing, contraindications, and regulatory alerts against official product labeling and primary regulatory sources before clinical decision-making.