DW> It is true, I worked as an RN for a Dr. that had training in
  DW> infectious diseases at CDC. We had a patient no other Dr. in town
  DW> could find out what the problem was. The patient was referred to us
  DW> and Dr. McGehee picked the DX right up. Lung disease from pigeon
  DW> droppings that had dropped down the chimmney of her fireplace.
  DW> 
  DW> Any more proof needed?
 
But that was probably from a viral infection (histoplasmosis, AKA St. Louis 
Pigeon Disease) carried on the droppings, not from the dust itself.  Histo is 
the reason some states eradicate large starling populations.
--- MacWoof 1.5.3
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