A majority of Kudoa spp. infects the somatic
muscle of fish establishing cysts. Previously, elevated
humoral responses were detected in BALB/c mice immunised
with Kudoa sp. pseudocyst extracts and in BALB/c
mice orally inoculated with Kudoa sp. pseudocysts, as well
as the presence of anti-Kudoa sp. antibodies in human sera
by enzyme-linked immunosorbent assay. The objective of
this work was to test Kudoa sp. pseudocyst extracts by the
skin prick test. Fifteen patients with gastroallergic and/or
allergic symptoms related to fish ingestion were examined.
Kudoa sp. pseudocyst extracts were administered (1 mg/ml)
on the volar forearm skin. Four of the 15 selected patients
were positive to Kudoa sp. extracts. The saline solution
negative control did not induce any reaction.
