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Volume 23, Number 12—December 2017
Research

Experimental Infection of Common Eider Ducklings with Wellfleet Bay Virus, a Newly Characterized Orthomyxovirus

Valerie Shearn-BochslerComments to Author , Hon Sang Ip, Anne Ballmann, Jeffrey S. Hall, Andrew B. Allison, Jennifer Ballard, Julie C. Ellis, Robert Cook, Samantha E.J. Gibbs, and Chris Dwyer
Author affiliations: US Geological Survey National Wildlife Health Center, Madison, Wisconsin, USA (V. Shearn-Bochsler, H.S. Ip, A. Ballmann, J.S. Hall); Cornell University, Ithaca, New York, USA (A.B. Allison); Arkansas Game and Fish Commission, Little Rock, Arkansas, USA (J. Ballard); Tufts University, North Grafton, Massachusetts, USA (J.C. Ellis); National Park Service, Wellfleet, Massachusetts, USA (R. Cook); US Fish and Wildlife Service, Fort Collins, Colorado, USA (S.E.J. Gibbs); US Fish and Wildlife Service, Hadley, Massachusetts, USA (C. Dwyer)

Main Article

Table 1

Wellfleet Bay virus serum antibody titers and virus isolation results in common eider (Somateria mollissima) ducklings experimentally infected with Wellfleet Bay virus, by specimen or tissue type, day of trial, and band number of duckling*

Day of trial and band no. Serum Ab titer Specimen or tissue type
OP swab CL swab Esophagus Intestine Kidney Liver Spleen
Day 2
27 Neg 0 0 0 2.00 × 103 3.40 × 104 2.00 × 104 2.00 × 104
32 NT 9.28 × 102 0 NT NT NT NT NT
52
 Neg
 0
 0
 9.28 × 102
 6.32 × 102
 6.32 × 102
 6.23 × 102
 9.28 × 104
Day 4
16† 1:160 0 6.23 × 10 9.28 × 102 0 0 0 0
25 Neg 0 0 0 0 0 0 0
37† 1:320 0 0 0 0 0 0 0
42
 1:160
 0
 0
 0
 0
 0
 0
 0
Day 5
22 1:160 0 0 NT NT NT NT NT
29 1:160 0 0 NT NT NT NT NT
30 1:320 0 0 NT NT NT NT NT
32 1:160 0 0 NT NT NT NT NT
34 1:160 0 0 NT NT NT NT NT
43 1:320 0 0 NT NT NT NT NT
48 1:320 0 0 NT NT NT NT NT
50 1:320 0 0 NT NT NT NT NT
59 1:160 0 0 NT NT NT NT NT
60 >1:20, <1:160 0 0 NT NT NT NT NT
11‡
 Neg
 0
 0
 NT
 NT
 NT
 NT
 NT
Day 7
22† 1:160 0 0 0 0 0 0 0
29† 1:160 0 0 0 0 0 0 0
48
 1:320
 0
 0
 0
 0
 4.31 × 102
 0
 0
Day 10
30 >1:640 0 0 0 0 0 0 0
32 1:160 0 0 0 0 0 0 0
34 >1:640 0 0 0 6.32 × 103 0 0 0
43 1:80 0 0 0 0 0 0 0
50 1:160 0 0 0 0 0 0 0
59 >1:640 0 0 0 0 0 0 0
60 >1:640 0 0 0 0 0 0 0
11‡ Neg 0 0 0 0 0 0 0

*Virus isolate results are expressed as PFU/mL. Negative serum Ab titer result defined as titer <1:5. Ab, antibody; CL, cloacal; NT, not tested; Neg, negative; OP, oropharyngeal.
†Euthanized because of illness.
‡Contact transmission control.

Main Article

Page created: November 16, 2017
Page updated: November 16, 2017
Page reviewed: November 16, 2017
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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