The antibody response in Legionnaires' disease

A Case Report of Severe Legionnaires’ Disease in Tehran, Iran

Legionella pneumophila is a thin, aerobic, Gram-negative, pathogenic bacillus and the leading cause of Legionnaires’ disease (LD) in human, especially those with high risk conditions including immune system disorders or chronic lung diseases. The mortality rate of LD has been reported to be 60% or higher in inappropriately treated cases. Investigating the prevalence of L. pneumophila and identi...

Sensitivity of three serum antibody tests in a large outbreak of Legionnaires' disease in the Netherlands.

In 1999, an outbreak involving 188 patients with Legionnaires' disease (LD) occurred at a flower show in the Netherlands. This large outbreak provided the opportunity to evaluate serum antibody tests to assay anti-Legionella pneumophila, since limited data are available on the sensitivity of these tests. The sensitivities of an indirect serotype 1-6 immunofluorescence antibody test (IFAT), a ra...

Neutralizing Antibody Response in Cattle Following Vaccination against Foot-and-Mouth Disease

The antibody response in Lyme disease.

We determined the antibody response against the Ixodes dammini spirochete in Lyme disease patients by indirect immunofluorescence and an enzyme-linked immunosorbent assay (ELISA). The specific IgM response became maximal three to six weeks after disease onset, and then declined, although titers sometimes remained elevated during later disease. Specific IgM levels correlated directly with total ...

Counterimmunoelectrophoresis in the serodiagnosis of Legionnaires' disease.

Counterimmunoelectrophoresis (CIE) was found to be a rapid, specific method for detecting circulating antibodies to Legionella pneumophila, using a simple ultrasonically disrupted antigen. The diagnostic specificity of the technique was 93% and the diagnostic sensitivity was 86.3%. Both IgM and IgG classes of antibody can be detected. There is some cross-reactivity between serogroup 1 and serog...