Experimental induction of cutaneous streptococcal abscesses in swine as a sequela to swinepox.

Streptococcal abscesses were experimentally induced in skin of swine as a sequela to swinepox. Swinepox lesions were more uniform in distribution when infection was induced by IV injection of swinepox virus than when induced by lice (Haematopinus suis) or scarification of skin. The incubation period for swinepox was between 10 and 14 days when virus was administered IV. Cutaneous abscesses developed in swine given IV injection of streptococci 10 and 14 days after they were injected with swinepox virus, but not when they were given the streptococci 7 days after virus injection or simultaneously with virus injection. Abscesses did not develop when streptococci were applied topically to swinepox lesions.