[Pig streptococci: reflections on their impact on public health]

aetiology arthrite arthritis artritis cerdo disease transmission epidemiologia epidemiologie epidemiology etiologia etiologie immunity inmunidad meningite meningitis pathogenese pathogenesis pathologie pathology patologia porcin public health septicaemia septicemia septicemie streptococcus suis swine terapia therapy transmission des maladies zoonose zoonoses zoonosis