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Multiple stings by imported fire ants (Solenopsis invicta), without systemic effects.
J D Diaz1, R F Lockey, J J Stablein
1Division of Allergy and Immunology, University of South Florida College of Medicine, Tampa.
Southern Medical Journal
|June 1, 1989
Summary
Imported fire ants can aggressively attack humans indoors, causing multiple stings. Despite high toxicity in mice, their venom appears safe for humans when injected intradermally.
Area of Science:
- Entomology
- Toxicology
- Human Medicine
Background:
- Imported fire ants (Solenopsis invicta) are invasive pests known for painful stings.
- Building infestations by fire ants are uncommon, and aggressive human attacks are rare.
Observation:
- A case report details an individual experiencing multiple stings after fire ants invaded a building.
- The patient presented with numerous sting sites following the aggressive encounter.
Findings:
- Fire ant venom, while highly toxic to mice (high LD50), did not cause systemic toxic effects in the human patient.
- Intradermal venom introduction in humans did not lead to severe systemic reactions.
Implications:
- This case highlights the potential for indoor fire ant aggression towards humans.
- It suggests a difference in systemic toxicity response between mice and humans to intradermal fire ant venom exposure.
- Further research may clarify the clinical significance of fire ant venom in human envenomation.