Sampling for cholera on Chesapeake Bay Sites

Image/Map: Sampling for Cholera in Chesapeake Bay. Sampling site map against a background microscopic image of Vibrio cholerae

Map caption: From article called "Predictability of Vibrio cholerae in Chesapeake Bay" map showing sampling sites. Ocean and estuaries are a reservoir for V. cholerae, when we identified the organism in water samples from the Chesapeake Bay and off the coast of Maryland and Delaware. In the Chesapeake Bay, native V. cholerae populations fluctuate with the seasons. V. cholerae is more common in the northern part of the bay where salinity is low and when the weather is warmer. In fact, temperature and salinity combined predict the presence of V. cholerae with an accuracy of between 75.5 and 88.5 %. Furthermore, changes in salinity from year to year, due to the influx of freshwater from the Susquehanna River at the head of the Bay, may cause V. cholerae populations to fluctuate greatly.

Further description: A map of Chesapeake Bay with labeled sampling sites. These sites include: Kent Island (K), Susquehanna Flats (F), Horn Point Laboratory (H), SERC (S), Baltimore (B). The dotted labels along the Chesapeake include: 908, 858, 845, 834, 818, 804, 744, 724, and 707.

Source: Valerie R. Louis, University of Maryland
Applied and Environmental Microbiology, Vol. 69, No. 5, May 2003, p. 2773-2785, Predictability of Vibrio cholerae in Chesapeake Bay (Figure 1)

Credit: © 2003, American Society for Microbiology. All Rights Reserved. From Applied and Environmental Microbiology, Vol. 69, No. 5, May 2003, p. 2773-2785, Predictability of Vibrio cholerae in Chesapeake Bay, by Valerie R. Louis, Estelle Russek-Cohen, Nipa Choopun, Irma N. G. Rivera, Brian Gangle, Sunny C. Jiang, Andrea Rubin, Jonathan A. Patz, Anwar Huq, and Rita R. Colwell

NSF permission to use: YES (permission granted by American Society for Microbiology, contingent on author permission granted by Valerie Louis and appropriate credit.)

Background photo: Microscopic image of Vibrio cholerae
Caption: The Cholera study was Dr. Colwell's primary focus for many years.
Source: Dr. Rita Colwell, Director of The National Science Foundation
NSF permission: NOTE: Dr. Colwell's personal research material, if for other than her speeches...ASK PERMISSION.

Design by: NSF/E. Myers
Websites: N/A
NSF funded: No
Original File Name: ChessieSampling.jpg

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