Asthma caused by bat droppings


Occupations
  • Hospital staff
  • Office staff
Agents
Bat excreta, Guano.
 
Incidence
Incidence: very low. The subjects are almost always atopic. IgE-dependent mechanism.
 
Conditions
The illness is associated with certain regions in Africa (Sudan) where the bats nest in roofs and ceilings.
 
Symptoms
Asthma and rhinitis symptoms appear when the subject stays in an infested building.
 
Diagnostic methods
Skin prick test with an extract prepared from bat's droppings.
 
Immunological assay: RAST/CAP RAST bat (special coupling).

References

  1. Lancet 1987, 7:316

As in all diagnostic testing, the diagnosis is made by the physican based on both test results and the patient history.