The authors have recently experienced 3 cases of ocular toxoplasmosis. The diagnosis was based on typical ocular lesions and hemagglutination test for toxoplasmosis. In addition to some clinical observations, a brief review of literature has been described.
Diagnosis ; Hemagglutination Tests ; Toxoplasmosis ; Toxoplasmosis, Ocular*

We experienced two AB3 and a B3 from a 27-year-old student and his family. B3 subgroup was confirmed by delayed and weak mixed-field agglutination with anti-B serum, adsorption-elution test, serum and saliva hemagglutination inhibition test and family study. We report a family case of AB3 and B3 with brief review of literatures.
Adult ; Agglutination ; Hemagglutination Inhibition Tests ; Humans ; Saliva

We experienced two AB3 and a B3 from a 27-year-old student and his family. B3 subgroup was confirmed by delayed and weak mixed-field agglutination with anti-B serum, adsorption-elution test, serum and saliva hemagglutination inhibition test and family study. We report a family case of AB3 and B3 with brief review of literatures.
Adult ; Agglutination ; Hemagglutination Inhibition Tests ; Humans ; Saliva

PURPOSE: For evaluating the immunogenicity of an influenza vaccine, the microneutralization (MN) test has a higher sensitivity and specificity as compared to the hemagglutination inhibition (HI) test. However, the MN test is more time consuming and is difficult to standardize. We performed the MN test to determine its usefulness as an alternative or complementary test to the HI test for evaluating the immunogenicity of influenza vaccines. METHODS: We compared the MN test with the HI test using 50 paired samples taken from a previous clinical study (2008-2009) in Korean children under 18 years of age. RESULTS: The linear correlation coefficients of the 2 tests for H3N2, H1N1, and influenza B were 0.69, 0.70, and 0.66, respectively. We identified a high index of coincidence between the 2 tests. For an influenza vaccine, the postvaccination seroprotection rates and seroconversion rates determined by the MN test were 78.0% and 96.0%, 90% and 42.0%, and 42.0% and 48.0% for H3N2, H1N1, and influenza B, respectively. Geometric mean titer fold increases of H3N2, H1N1, and influenza B were 2.89, 5.04, and 4.29, respectively, and were 2.5-fold higher. We obtained good results in the evaluation of the immunogenicity of the 2008-2009 seasonal influenza vaccines. CONCLUSION: We found that the MN test was as effective as the HI test. Therefore, we suggest that the MN test can be used as an alternative or complementary test to the HI test for evaluating the immunogenicity of influenza vaccines.
Child ; Hemagglutination ; Hemagglutination Inhibition Tests ; Humans ; Influenza Vaccines ; Influenza, Human ; Neutralization Tests ; Seasons ; Sensitivity and Specificity

The virus neutralization (VN) test was used to determine potency of the infectious bronchitis (IB) vaccine. The results of VN, hemagglutination inhibition (HI), and enzyme-linked immunosorbent assay (ELISA) were compared with those of the IBV M41. The r² values between VN and HI titers and the ELISA antibody titer were 0.8782 and 0.0336, respectively, indicating a high correlation between VN and HI, but not VN and ELISA. The Cohen's kappa coefficient between the VN titer of 2 log₁₀ and HI titer of 5 log₂ was 0.909. Our results showed that VN could be replaced with HI for testing the potency of IBV M41.
Bronchitis ; Enzyme-Linked Immunosorbent Assay* ; Hemagglutination Inhibition Tests* ; Hemagglutination* ; Infectious bronchitis virus* ; Neutralization Tests* ; Vaccine Potency*

Elution time of velogenic, mesogenic and lentogenic strains of Newcastle disease virus was determined. The differences in their elution time were also calculated. Four samples, each of a velogenic strain (VGF2), a mesogenic strain (Komarov) and a lentogenic strain (LaSota) were used for hemagglutination test with 0.6% chicken red blood cells. The time it took for wells of the end hemagglutination points (highest dilution that gave agglutination) to elute was recorded as elution time for each sample. The mean elution time of the three strains of Newcastle disease virus differed significantly (p < 0.05). The velogenic strain gave the highest mean elution time of 118 min, followed by the mesogenic strain with 59 min and the lentogenic strain with 25 min. Based on this result it appears that elution time could form a basis for rough characterization of isolates of Newcastle disease virus into the three major strains.
Animals ; Chickens/blood ; Erythrocytes/*virology ; Hemagglutination Tests ; *Hemagglutination, Viral ; Newcastle disease virus/isolation&purification/*pathogenicity

BACKGROUND: The distinction between secretors and nonsecretors of ABH and Lewis substances is made by inhibiting an antiserum agglutinin reaction with saliva, but many variables such as ethnic group, Lewis and ABO genotype, saliva collection method and antiserum influence the detection of salivary substances. Human secretor (1,2) fucosyltransferase (FUT II) gene determines the ABH secretor status and influences the Lewis phenotype of an individual. The aim of this study is to comparison between the genotype of the secretory (FUT II) gene and the secretory phenotype of the saliva and evaluate the usefulness of genotyping secretory gene. METHOD: In order to explore the secretory genotypes, the 79 specimens were analyzed by the PCR-RFLP method designed for the detection of the A385T, the C357T and the G428A mutations of FUT II gene. Also, we performed secretory phenotyping of the saliva by hemagglutination inhibition test and compared between the genotype of FUT II gene and secretory phenotype of the saliva. RESULT: The frequencies of Se1, Se2 and sej among 158 alleles examined in a random sample were 11.1%, 40.5% and 48.4%. The frequencies of Se1/Se1, Se1/Se2, Se2/Se2, Se1/sej, Se2/sej and sej/sej among 158 genotypes were 3.2%, 3.2%, 20.3%, 12.7%, 37.3% and 23.4%. The frequencies of Secretor and nonsecretor phenotypes were 76.6% and 23.4%. There were 3 mismatch individuals between phenotype and genotype, all three cases were nonsecretor in phenotype but secretor (Se1/Se1, Se1/Se2, Se2/sej) in genotype. CONCLUSION: PCR-RFLP method can be effectively used for the genotyping of the FUT II gene and offer an attractive alternative to the phenotype of secretor state using saliva.
Alleles ; Ethnic Groups ; Genotype* ; Hemagglutination Inhibition Tests ; Humans ; Phenotype* ; Saliva*

On a total 375 sera with reactive results on VDRL and/or FTA-ABS test(s), derived from severance Hospital, qualitative and quantitative TPHA tests were carried out. The objectives of the present study were to compare the result of VDRL, FTA-ABS and TPHA teats in different syphilis stages, and to as sess the suitability of the TPHA test as a screening test for syphilis. The results are summarized as follows: 1. The sensitivity of VDRL test was poor compared with TPHA and FTA-ABS tests except in secondary syphilis. 2. The FTA-ABS test(10Qp,) was more sensitive than the TPHA test(86g) in primary syphilis, but it is time consuming and costly. 3 The TPHA titers were relatively low in primary syphilis. 4, Below 1: 32Q in TPHA titer, the percentage of sera from patients tested over 1 year(64%) after the completion of treatment was higher than within 1 year(41%). The TPHA test showed 77%. agreement with VDRL test and 89% agreement with FTA-ABS test. The VDRL test is easy to perform and economic, but it showed poor effeetiveness as screening test for the detection of syphilis. On the other hand the TPHA test had a wide spectrum of reactivity in different stages of syphilis and was easy to perform. So on the basis of the results presented, we concluded that the TPHA test provides a very effective screen for syphilis.
Fluorescent Treponemal Antibody-Absorption Test ; Hand ; Hemagglutination Tests* ; Hemagglutination* ; Humans ; Mass Screening ; Serologic Tests* ; Syphilis* ; Treponema pallidum* ; Treponema*

Analyzing HI tests of 110 cases of clinical Japanese Encephalitis in 1982, the following results are obtained. 1. The results of HI test are positive in 39 (35.5%), borderline positive in 19 (9.1%), negative in 14 (12.7%) and undetermined in 47 (43.7%) cases. 2. In 49 cases of positive HI test, 14 cases reveal the positive result on the first HI test requested in 5-27 days after the clinical onset of symptoms, and 35 cases show increasing HI titers on the follow-up studies. There is a tendency of increasing HI titers upto 3-4 weeks of onset and sustaining the value for more than two months. 3. In 35 cases with increasing titers on follow-up study, the highest titer is 1:80 in 5 cases, and the half of HI negative cases maintain that value throughout the course. 4. There is no significant statistical differences in clinical characteristics, laboratory and cerebrospinal fluid studies between the patient group of HI positive or borderline and group of HI negative or undermined, except mean hospital day and incidence of coma and death.
Cerebrospinal Fluid ; Coma ; Encephalitis, Arbovirus* ; Encephalitis, Japanese ; Follow-Up Studies ; Hemagglutination Inhibition Tests* ; Hemagglutination* ; Humans ; Incidence ; Korea*

To establish a definite diagnosis for pulmonary hydatid disease, combination of radiology and serology is useful. In this study, 19 preoperative sera from patients with surgically confirmed pulmonary hydatidosis, 40 sera from patients with other parasitosis and pulmonary diseases, and 20 sera from healthy donors were evaluated using 4 different serological tests, i.e., the commercial ELISA (ELISA-kit) test, the ELISA (ELISA-lab) test prepared in our laboratory, the commercial indirect hemagglutination assay kit (IHA-kit) test, and the IHA test using sensitized sheep red blood cells with tannic acid (IHA-TA). The ELISA-kit was the most sensitive (84.2%) and the most specific test (100.0%). The ELISA-kit also demonstrated the highest positive (100.0%) and negative (95.2%) predictive values. The sensitivity of the ELISA-lab test, that we prepared, was found to be 73.6%, whereas the IHA-kit test and the IHA-TA test were found to be 73.6% and 68.4%, respectively. The specificity of these tests was 96.6%, 98.3%, and 83.3%, respectively. When all 4 tests were assessed together, it was found that the sensitivity had risen to 94.7%. When the ELISA-kit was assessed with the IHA-kit and IHA-TA together, it was found that the sensitivity was 89.5% and 84.2%, respectively. Likewise, the combination of the ELISA-lab and IHA-kit or IHA-TA allowed us to achieve a sensitivity of 84.2% in cases of pulmonary echinococcosis. In conclusion, the diagnosis would be imminent if least 2 tests were applied together.
Echinococcosis, Pulmonary/*diagnosis ; Enzyme-Linked Immunosorbent Assay/*methods ; Hemagglutination Tests/*methods ; Humans ; Predictive Value of Tests ; Sensitivity and Specificity ; Serologic Tests/methods