Antigenic characterization of type A(H3N2) influenza viruses, by hemagglutination
Among the 9 persons with positive MN results, only 2 had positive results according to horse hemagglutination
inhibition assay; however, all 9 had clear reactivity to H5 proteins on Western blot analysis and were confirmed positive according to WHO criteria (Table 2).
assay and VDRL tests, according to the selection criteria.
inhibition assay titers for 3 influenza strains from swine exhibited at county fair, by date of blood draw, Kansas, 2009 * August 7 titers Subtype Subtype H3N2 "County fair," Swine H1N1 ([double subtype H3N2 ID no.
inhibition (HI) antibody titers for influenza D viruses in serum samples from dromedary camels, Bati and Fafen Districts, Ethiopia.
The 100 mug IM dose induced seroprotective immunity of hemagglutination
inhibition greater than or equal to 1:40 in 100 percent of participants and microneutralization titers greater than or equal to 1:20 in 87 percent of participants.
The indirect hemagglutination
test (IH) was performed in serum using the TOXO-HAI Kit (Gold Analyses Diagnostic Ltd, MG, Brazil), according to the manufacturer's recommendations; a positive (cut-off) dilution was[greater than or equal to]1:32.
Seroconversion was defined as at least a fourfold serum hemagglutination
inhibition (HI) antibody increase from prevaccination level (day 0), and seroprotection was defined as percent with HI titers of 1:40 or greater at postvaccination day 28.
From total 650 broilers sera were taken, around the five geographically distinct districts and analyzed through hemagglutination
inhibition (HI) test for detection of H5 antibodies.
Preclinical studies also showed that SRF231 does not induce hemagglutination
, an important potential safety advantage.
assay (TPHA), microhemagglutination, fluorescent treponemal antibody absorption test (FTA-abs), and the enzyme-linked immunosorbent assay (ELISA) that detect IgG antibodies to antigenic components of T.
At 4 weeks, just over three-quarters of the patients who had briefly stopped methotrexate showed at least a fourfold increase in hemagglutination
inhibition antibody titer against two or more vaccine strains.
This assay can replace hemagglutination
inhibition tests that use blood from infected ferrets.
Other initial screening assays that are commonly recommended by laboratories include a chemiluminescent microplate immunoassay (181 of 1876; 9.6%), an enzyme immunoassay for total antibodies (90 of 1876; 4.8%) or only IgG (55 of 1876; 2.9%), a multiplex flow assay (57 of 1876; 3.0%), an agglutination (Treponema pallidum particle agglutination assay) or hemagglutination
assay (microhemagglutination assay for T pallidum antibodies or Olympus automated hemagglutination
test) (39 of 1876; 2.1%), or the venereal disease research laboratory test (36 of 1876; 1.9%).
Hydatid cyst hemagglutination
titer test was 1/320 and the patient was diagnosed as hydatid cyst disease.