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Appl Environ Microbiol. 1969 April; 17(4): 577-583
Copyright © 1969 American Society for Microbiology. All Rights Reserved.

Study of Delayed Hypersensitivity to Myxoviruses Induced by Vaccines

Department of Medicine, Research and Educational Hospitals, University of Illinois College of Medicine, Chicago, Illinois 60680

ABSTRACT

The delayed hypersensitivity response of guinea pigs to Bacillus Calmette-Gúerin (BCG) and myxovirus vaccines was investigated by use of the techniques of skin testing and inhibition of macrophage migration. A serum antibody response to the injected vaccines was readily demonstrable. Parainfluenza type 2 virus consistently failed to induce a delayed hypersensitivity state in 15 animals, even with the use of a virus adjuvant emulsion. Respiratory syncytial virus occupied an intermediate position in that positive delayed type skin tests of an erythematous nature were elicited following inoculation, but only two of seven guinea pigs yielded a positive migration inhibition test. In mumps-inoculated animals, skin testing gave rise to erythematous delayed skin reactions which varied from 0 to 20 mm in size. Migration inhibition could be demonstrated in 7 of 21 animals. In almost all guinea pigs inoculated with BCG, large, indurated, erythematous skin reactions were elicited, and inhibition of macrophage migration was readily demonstrated. The degree of skin reactivity was positively correlated with inhibition of macrophage migration. If the skin reaction to a specific antigen exceeded 9 mm of erythema, that antigen also inhibited macrophage migration. Skin testing proved to be the most sensitive indicator of viral hypersensitivity. Migration inhibition was demonstrated only when a greater than 8-mm skin reaction was evoked. This cellular hypersensitivity appeared to be a qualitative phenomenon, the expression of which could be heightened by the use of adjuvant. The applicability and sensitivity of the migration inhibition technique is considered relative to its use for in vitro monitoring of effects of viral vaccine inoculations.