Abstract
The conclusion of Morris et al. (2006) that “Exposure to Pfiesteria Species in Estuarine Waters Is Not a Risk Factor for Illness” is unsupported because a) a description of Pfiesteria-related fish kills in the Chesapeake estuaries during 1999–2002 was omitted; b) quantitative data on Pfiesteria were not collected; c) data on visual contrast sensitivity (VCS) were collected but not reported; d) a comprehensive list of other results was not presented; and e) data were lost due to a 30% attrition rate. These data are needed to justify or negate the conclusion.
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