Frequency of Pulmonary Hemosiderosis in Eastern North Carolina

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Abstract
Pulmonary hemosiderosis has been attributed to airborne fungi in water-damaged homes in studies of a cluster of cases in infants and children in Cleveland, Ohio, in 1997. We have searched for such emerging infectious agents in the Coastal Plain of North Carolina, which is subject to intermittent flooding. Pulmonary tissue from 206 infants and young children whose deaths had been investigated from October 1978 to September 1996 was retained at East Carolina University School of Medicine. Ages ranged from premature newborns to 49-months. One hundred and ten deaths were attributed to sudden infant death syndrome (SIDS). New sections were cut and analyzed using hematoxylin and eosin, Prussian blue for iron, and Gomori methenamine silver for fungal organisms. Twenty-three infants and children had iron-containing macrophages. Sixteen of these had underlying illnesses, but 4 were originally diagnosed as SIDS. Only one of these had sufficient hemosiderosis to be considered as having pulmonary hemosiderosis and no fungi were present. One case without iron had fungi and was not originally diagnosed as SIDS. The single case of pulmonary hemosiderosis found in this rural area is not similar to the cluster in Cleveland. The study identifies no fungal organisms as emerging infectious diseases in this area.