April 2009

Press accounts, as well as those from the CDC, addressing the number of sick people in the ongoing Salmonella sprouts outbreak are a little misleading if you don’t know what is actually being said.  The reality of these outbreaks (whether E. coli O157, Salmonella, or anything else) is that the number of people who are actually ill, as opposed to the number who have a stool sample that tests positive, is much bigger than the reports would indicate. 

In fact, one of the leading studies on the subject suggests (and this is obviously not a bright line rule) that the number of actual victims in a given outbreak, as opposed to merely those with positive stool samples, is as much as 38 times the number of stool sample confirmed individuals.  I hope that makes sense.  Paul Mead et al, explain it much more clearly in their article, which I will post in a few minutes (technical difficulties). 

Continue Reading The Scope of the Recent Salmonella Sprouts Outbreak

Yesterday, there was a report of  E. coli contamination in the Merrimack River in Massachusetts.   Today a report of a positive test from the Greenwood Creek in Greenwood, Indiana.   The creek is apparently a popular swimming spot in the summer.   General tests for E. coli do not indicate whether or not E. coli O157:H7 is present.   The dangerous

Brandy Baltzell is a freshman at Millersville University.  She is going to major in biochemistry, and will soon, I think, be doing great work with E. coli O157:H7 and other nasty little foodborne pathogens.  I was happy to play what role I could in the recent research paper that she wrote, discussing the characteristics of E.

The Daily News in North Andover, Massachusetts is reporting on water quality issues in the Merrimack River.  According to the story, the Merrrimack River Watershed Council states that E. coli has been found in the river.

Apparently, it was not an isolated incident.  According to the story, the river was unsafe for swimming on