Evaluation of Nobuto filter paper strips for the detection of avian influenza virus antibody in waterfowl.
The utility of using Nobuto paper strips for the detection of avian influenza antibodies was examined in mallards (Anas platyrhynchos) experimentally infected with low pathogenic avian influenza viruses. Blood was collected 2 wk after infection and was preserved either as serum or whole blood absorbed onto Nobuto strips. Analysis of samples using a commercially available blocking enzyme-linked immunosorbent assay revealed comparable results (> or = 96% sensitivity for all methods) between sera stored at -30 C and the Nobuto strip preservation method even when the Nobuto strips were stored up to 3 mo at room temperature (RT). Significant differences were detected in the ratio of sample absorbance to negative control absorbance for Nobuto strips stored at RT compared with sera stored at -30 C, although these differences did not affect the ability of the test to reliably detect positive and negative samples. Nobuto strips are a convenient and sensitive alternative to the collection of serum samples when maintaining appropriate storage temperatures is difficult.
United States Geological Survey, National Wildlife Health Center, Madison, WI 53711, USA. rdusek@usgs.gov
Robert J
RJ
Dusek
Jeffrey S
JS
Hall
Sean W
SW
Nashold
Joshua L
JL
TeSlaa
Hon S
HS
Ip
D000818:Animals; D046090:Anseriformes; D000914:Antibodies, Viral / Q000097:blood*; D001800:Blood Specimen Collection / Q000379:methods / Q000662:veterinary; D019411:Clinical Laboratory Techniques; D004797:Enzyme-Linked Immunosorbent Assay / Q000662:veterinary*; D009980:Influenza A virus / Q000276:immunology*; D005585:Influenza in Birds / Q000097:blood / Q000276:immunology / Q000821:virology*; D008851:Micropore Filters; D010209:Paper; D012698:Serologic Tests; D013048:Specimen Handling
D000914:Antibodies, Viral