ImmunoassayNeisseria meningitidis, Serogroup ASensitivity and SpecificityCytokinesBiological MarkersReproducibility of ResultsMultiplex Polymerase Chain ReactionImmunoenzyme TechniquesFluorescence Polarization ImmunoassayEnzyme Multiplied Immunoassay TechniquePolymerase Chain ReactionReagent Kits, DiagnosticEnzyme-Linked Immunosorbent AssayFluoroimmunoassayDNA PrimersCross Reactions