Clinical Signs in Pigs1,2,3
The clinical signs and/or pathological findings, in conjunction with the elimination of differentials, can be used to make a presumptive diagnosis. Possible differentials include pasteurellosis, pseudorabies, porcine reproductive and respiratory syndrome, chlamydial and Haemophilus infection.1 The clinician can also use an antigen-detection test for a rapid stall-side result. This test does not prove that the virus is the 2009 H1N1subtype, however, because it cannot differentiate it from the seasonal H1N1.4
Infection of the 2009 H1N1 sub-type can be confirmed by one or both of the following methods2,4:
Serology can be used to make a diagnosis even after clinical signs have resolved. Hemagglutinin inhibition that illustrates an increase in virus-specific antibodies using acute and convalescent serum samples indicates exposure to H1N1.1 This is can be used to bolster a presumptive diagnosis.
|Top of the page|