Title: Haemophilus parasuis (Glasser’s Disease) | Iowa State University
Headings: Haemophilus parasuis (Glasser’s Disease)
Haemophilus parasuis (Glasser’s Disease)
Definition
Occurrence
Historical information
Etiology
Epidemiology
Pathogenesis
Clinical signs
Lesions
Diagnosis
Control

Content: For that reason, sick animals should be treated promptly and parenterally with an appropriate antimicrobial. H. parasuis is sensitive to many antibiotics and sulfonamides but the sensitivity pattern of isolates from individual farms may vary over time so periodic evaluation of antibiograms is warranted. If numerous pigs are affected, it may be advisable to mass medicate, through the water, all pigs in the affected age group. Prevention may involve management modifications, sound husbandry, control of primary diseases such as PRRSV, prophylactic antimicrobials, or vaccination. Since H. parasuis colonizes relatively early in the piglets’ life (less than 10 days of age), segregated rearing has not been uniformly successful in preventing infection or disease. Acclimatization and vaccination of breeding stock has been of some benefit. Minimizing stressors associated with weaning and the nursery environment should be emphasized. Formalin-killed bacterins are available and can be effective for prophylaxis. Unfortunately, protection against one serovar of H. parasuis may not assure good protection against all serovars. Limited research suggests that piglets from dams that have been vaccinated against H. parasuis prior to farrowing, or piglets vaccinated when one to three weeks old, have considerable resistance to disease caused by the same serovar.