Abstract
Previous experimental infection demonstrated that juvenile
muskellunge (Esox masquinongy) can survive experimental
infection of viral hemorrhagic septicemia virus, Genotype
IVb (VHSV IVb) at a low concentration of exposure. Herein
we report that survivors of experimental infection with
VHSV IVb shed the virus into the surrounding environment
for an extended period of time. When muskellunge were
exposed to VHSV IVb by immersion at a concentration of
1,400 plaque forming units (PFU)/ml, VHSV IVb was detected
in the water of surviving fish for up to 15 weeks postexposure
(p.e.) with the highest levels of shedding occurring
between weeks 1 and 5 p.e. We estimated that each juvenile
muskellunge can shed upwards of 1.36×105 PFU/fish/h after
initial exposure signifying the uptake and amplification of
VHSV to several orders of magnitude above the original
exposure concentration. Muskellunge surviving low concentration
exposure were re-infected with VHSV IVb by immersion
at week 22 p.e. at concentrations ranging from 0 to
106 PFU/ml. Viral shedding was detected in all re-exposed
fish, including mock rechallenged controls up to 15 consecutive
weeks. Rates of viral shedding were substantially higher
following rechallenge in the first 5 weeks. The highest rate
of viral shedding was approximately 4.6×106 PFU/fish/h and
shedding did not necessarily correspond to the re-exposure
VHSV concentration. The results of this study shed new
light into the dynamics of VHSV IVb shedding in a highly
susceptible host and provide useful insights to fishery managers
to design effective control strategies to this deadly
virus.
Citations
Citations to this article as recorded by

- Distribution of viral hemorrhagic septicemia virus in the nearshore fish community of the St. Lawrence River
Anna L Haws, Rodman G Getchell, John M Farrell
Journal of Aquatic Animal Health.2025; 37(3): 136. CrossRef - Temperature-dependent shedding dynamics of viral hemorrhagic septicemia virus in olive flounder (Paralichthys olivaceus)
Hyo-Young Kang, Yoonhang Lee, Jiyeon Park, Ju-Yeop Lee, Minji Sung, Gwang-Il Jang, Sung Youl Hong, Mun-Gyeong Kwon, Chan-Il Park, Do-Hyung Kim
Aquaculture.2024; 592: 741167. CrossRef - Shedding of Viral Haemorrhagic Septicaemia Virus (VHSV) from Rainbow Trout, Oncorhynchus mykiss, and Quantification in Waste from Processing Preclinical Fish
Claire Joiner, Mickael Teixeira Alves, Birgit Oidtmann, Karima Al Salihi
Transboundary and Emerging Diseases.2023; 2023: 1. CrossRef - Identification of scale drop disease virus based on environment DNA in an aquaculture facility of Singapore
Edwin Ong Jun Kiat, Thiviya Nair, M. Sobana, Ng Tze Hann, Jose A. Domingos, Giana Bastos Gomes
Aquaculture.2023; 563: 738993. CrossRef - Shedding Kinetics of Infectious Hematopoietic Necrosis Virus (IHNV) in Juvenile Spring- and Fall-Run Chinook Salmon of the Columbia River Basin
Daniel G. Hernandez, Gael Kurath
Animals.2022; 12(15): 1887. CrossRef - Widespread Seropositivity to Viral Hemorrhagic Septicemia Virus (VHSV) in Four Species of Inland Sport Fishes in Wisconsin
Whitney A. Thiel, Kathy L. Toohey Kurth, David Giehtbrock, Bridget B. Baker, Megan Finley, Tony L. Goldberg
Journal of Aquatic Animal Health.2021; 33(1): 53. CrossRef - Long-term shedding from fully convalesced individuals indicates that Pacific herring are a reservoir for viral hemorrhagic septicemia virus
PK Hershberger, AH MacKenzie, JL Gregg, MD Wilmot, RL Powers, MK Purcell
Diseases of Aquatic Organisms.2021; 144: 245. CrossRef - When and why direct transmission models can be used for environmentally persistent pathogens
Lee Benson, Ross S. Davidson, Darren M. Green, Andrew Hoyle, Mike R. Hutchings, Glenn Marion, Claudio José Struchiner
PLOS Computational Biology.2021; 17(12): e1009652. CrossRef - Susceptibility of pike Esox lucius to VHSV and IHNV and potential transmission to rainbow trout Oncorhynchus mykiss
J Cabon, F Almeras, M Baud, L Pallandre, T Morin, L Louboutin
Diseases of Aquatic Organisms.2020; 139: 175. CrossRef - Production of a monoclonal antibody against of muskellunge (Esox masquinongy) IgM heavy chain and its use in development of an indirect ELISA for titrating circulating antibodies against VHSV-IVB
Mohamed Faisal, Isaac F. Standish, Mary Ann Vogelbein, Elena V. Millard, Stephen L. Kaattari
Fish & Shellfish Immunology.2019; 88: 464. CrossRef - Shedding of the Salmonid Herpesvirus-3 by Infected Lake Trout (Salvelinus namaycush)
Mohamed Faisal, Mochamad Purbayu, Megan A. Shavalier, Terence L. Marsh, Thomas P. Loch
Viruses.2019; 11(7): 580. CrossRef - Individual‐based model evaluation of using vaccinated hatchery fish to minimize disease spread in wild fish populations
Lori N. Ivan, Travis O. Brenden, Isaac F. Standish, Mohamed Faisal
Ecosphere.2018;[Epub] CrossRef - Replication and shedding kinetics of infectious hematopoietic necrosis virus in juvenile rainbow trout
Andrew R. Wargo, Robert J. Scott, Benjamin Kerr, Gael Kurath
Virus Research.2017; 227: 200. CrossRef - Potential Reservoirs and Risk Factors for VHSV IVb in an Enzootic System: Budd Lake, Michigan
Elizabeth Throckmorton, Travis Brenden, Amber K. Peters, Tammy J. Newcomb, Gary E. Whelan, Mohamed Faisal
Journal of Aquatic Animal Health.2017; 29(1): 31. CrossRef - DNA Vaccination Partially Protects Muskellunge against Viral Hemorrhagic Septicemia Virus (VHSV-IVb)
Elena V. Millard, Ashley M. Bourke, Scott E. LaPatra, Travis O. Brenden, Scott D. Fitzgerald, Mohamed Faisal
Journal of Aquatic Animal Health.2017; 29(1): 50. CrossRef - Complete sequences of 4 viral hemorrhagic septicemia virus IVb isolates and their virulence in northern pike fry
RG Getchell, ER Cornwell, S Bogdanowicz, J Andrés, WN Batts, G Kurath, R Breyta, JG Choi, JM Farrell, PR Bowser
Diseases of Aquatic Organisms.2017; 126(3): 211. CrossRef - A Recombinant Viral Hemorrhagic Septicemia Virus Genotype IVb Glycoprotein Produced in Cabbage Looper Larvae Trichoplusia ni Elicits Antibody Response and Protection in Muskellunge
Isaac Standish, Mohamed Faisal
Journal of Aquatic Animal Health.2017; 29(2): 105. CrossRef - A DNA vaccine encoding the viral hemorrhagic septicemia virus genotype IVb glycoprotein confers protection in muskellunge (Esox masquinongy), rainbow trout (Oncorhynchus mykiss), brown trout (Salmo trutta), and lake trout (Salvelinus namaycush)
Isaac F. Standish, Elena V. Millard, Travis O. Brenden, Mohamed Faisal
Virology Journal.2016;[Epub] CrossRef - Does Herd Immunity Exist in Aquatic Animals?
Isaac Standish, Travis Brenden, Mohamed Faisal
International Journal of Molecular Sciences.2016; 17(11): 1898. CrossRef - Principles underlying the epizootiology of viral hemorrhagic septicemia in Pacific herring and other fishes throughout the North Pacific Ocean
Paul K. Hershberger, Kyle A. Garver, James R. Winton
Canadian Journal of Fisheries and Aquatic Sciences.2016; 73(5): 853. CrossRef - Fathead minnow nidovirus infects spotfin shiner Cyprinella spiloptera and golden shiner Notemigonus crysoleucas
A Baird, M Faisal
Diseases of Aquatic Organisms.2016; 119(1): 37. CrossRef - Direct and Indirect Evidence Suggests Continuous Presence of Viral Hemorrhagic Septicemia Virus (Genotype IVb) in Budd Lake, Michigan: Management Implications
Elizabeth Throckmorton, Amber Peters, Travis Brenden, Mohamed Faisal
North American Journal of Fisheries Management.2015; 35(3): 503. CrossRef - Detection and surveillance of viral hemorrhagic septicemia virus using real-time RT-PCR. I. Initial comparison of four protocols
JV Warg, T Clement, ER Cornwell, A Cruz, RG Getchell, C Giray, AE Goodwin, GH Groocock, M Faisal, R Kim, GE Merry, NBD Phelps, MM Reising, I Standish, Y Zhang, K Toohey-Kurth
Diseases of Aquatic Organisms.2014; 111(1): 1. CrossRef - Detection of viral hemorrhagic septicemia virus-IVb antibodies in sera of muskellunge Esox masquinongy using competitive ELISA
EV Millard, TO Brenden, SE LaPatra, S Marcquenski, M Faisal
Diseases of Aquatic Organisms.2014; 108(3): 187. CrossRef - Experimental infection studies demonstrating Atlantic salmon as a host and reservoir of viral hemorrhagic septicemia virus type IVa with insights into pathology and host immunity
J. Lovy, P. Piesik, P.K. Hershberger, K.A. Garver
Veterinary Microbiology.2013; 166(1-2): 91. CrossRef - A new StaRT-PCR approach to detect and quantify fish Viral Hemorrhagic Septicemia virus (VHSv): Enhanced quality control with internal standards
Lindsey R. Pierce, James C. Willey, Erin L. Crawford, Vrushalee V. Palsule, Douglas W. Leaman, Mohamed Faisal, Robert K. Kim, Brian S. Shepherd, Lauren M. Stanoszek, Carol A. Stepien
Journal of Virological Methods.2013; 189(1): 129. CrossRef - Spread of the Emerging Viral Hemorrhagic Septicemia Virus Strain, Genotype IVb, in Michigan, USA
Mohamed Faisal, Megan Shavalier, Robert K. Kim, Elena V. Millard, Michelle R. Gunn, Andrew D. Winters, Carolyn A. Schulz, Alaa Eissa, Michael V. Thomas, Martha Wolgamood, Gary E. Whelan, James Winton
Viruses.2012; 4(5): 734. CrossRef