Seasonal Patterns of Gastrointestinal Illness and Streamflow along the Ohio River

Waterborne gastrointestinal (GI) illnesses demonstrate seasonal increases associated with water quality and meteorological characteristics. However, few studies have been conducted on the association of hydrological parameters, such as streamflow, and seasonality of GI illnesses. Streamflow is correlated with biological contamination and can be used as proxy for drinking water contamination. We compare seasonal patterns of GI illnesses in the elderly (65 years and older) along the Ohio River for a 14-year period (1991–2004) to seasonal patterns of streamflow. Focusing on six counties in close proximity to the river, we compiled weekly time series of hospitalizations for GI illnesses and streamflow data. Seasonal patterns were explored using Poisson annual harmonic regression with and without adjustment for streamflow. GI illnesses demonstrated significant seasonal patterns with peak timing preceding peak timing of streamflow for all six counties. Seasonal patterns of illness remain consistent after adjusting for streamflow. This study found that the time of peak GI illness precedes the peak of streamflow, suggesting either an indirect relationship or a more direct path whereby pathogens enter water supplies prior to the peak in streamflow. Such findings call for interdisciplinary research to better understand associations among streamflow, pathogen loading, and rates of gastrointestinal illnesses

Macrosocial determinants of population health in the context of globalization

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/55738/1/florey_globalization_2007.pd

Pfiesteria: Background information and NJ status

This slide show summarizes the known background information and research on Pfiesteria, along with New Jersey's Pfiesteria status. Many helpful illustrations are included.5/31/0

Pfiesteria monitoring in New Jersey 1998-2000

This document describes research conducted in New Jersey on Pfiesteria, a group of unicellular microorganisms that live in estuaries (back bay waters where rivers mix with ocean water). The report provides background and public health information, monitoring information and results, the NJ Pfiesteria Contingency Plan, maps of testing areas, and a chronology of Pfiesteria monitoring in New Jersey.Fourth Update: June 8, 200