True double positivity to bee and vespid venoms is difficult
to distinguish from cross-reactivity to these venoms
[1] . Only 47% of 76 patients with double positivity to whole
bee and wasp (yellow jacket) venoms reacted to recombinant
species-specific major allergens (rSSMA) from both
of these species. The specificity of IgE to rSSMA was excellent,
especially for wasp venom [31] . In another study,
component-resolved diagnosis with wasp-specific recombinant
allergen components Ves v I and Ves v 5 was a reliable
method of diagnosing wasp/yellow jacket allergy