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An attempt to determine the relation between levels of IgG, IgA and IgM immunoglobulins and titers of antibodies against RS virus.

In a group of 126 children aged 5-24 months with respiratory infections, the relation between levels of IgA, IgG and IgM immunoglobulins and titers of antibodies against the RS virus were studied. In children aged 5-12 months with high titers of antivirus antibodies, elevated levels of IgG were more frequent, but high antibody titers were not related to IgA and IgM immunoglobulins.