Serodiagnosis of Aspergillus fumigatus antibody in migratory ducks

Migrating duck populations in Wisconsin were evaluated during a one-year period for exposure to Aspergillus fumigatis by two serodiagnostic methods: immunodiffusion and countercurrent immunoelectrophoresis. Peak antibody reactivity to sporulating culture extracts of the fungus was detected in serum samples collected in winter. Antibody levels did not differ between male and female or adult and juvenile populations.