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    Testing for the potential effects of Karenia brevis on school absences [poster]

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    Moore et al. 2015 Kb and school absenteeism [POSTER].pdf (2.262Mb)
    Date
    2015-11-15
    Author
    Moore, Tamecia  Concept link
    Diaz, Roberto E.  Concept link
    Ullmann, Steven G.  Concept link
    Hoagland, Porter  Concept link
    Beet, Andrew R.  Concept link
    Jin, Di  Concept link
    Kirkpatrick, Barbara  Concept link
    Kirkpatrick, Gary  Concept link
    Fleming, Lora E.  Concept link
    Hitchcock, Gary  Concept link
    Drennon, Michael  Concept link
    Kumar, Naresh  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/8623
    Keyword
     Florida Red Tide; Harmful algae bloom; HAB 
    Abstract
    We analyzed a potential relationship between changes in school absences in Sarasota County and Karenia brevis (Kb) count data. Brevetoxins released during Kb blooms could be a reason for students experiencing increased respiratory or gastrointestinal illnesses, causing an increase in absence rates. We designed a map to relate the locations of Sarasota County schools and the distributions of those Kb counts with a minimum of 10,000 cell counts per liter and above. Due to the proximity of Kb counts, we hypothesized that brevetoxins could have a greater effect on the schools near the coast of Florida rather than the schools inland. Because individuals could be affected by brevetoxins up to several days after being exposed, we expected to find a lagged effect of a bloom occurrence on school absences. Using a regression approach, we were unable to detect an association between Kb counts and student absences. In some cases, the direction of the effects were opposite to what would be expected (i.e., an increase in Kb counts was associated with a reduction in the percent absent rate). The results indicated that over 70% of the variation in the school percent absent rate could be explained by the latent characteristics of individual schools (such as variations in student populations across different schools), by school week, by month (such as the effects of flu outbreaks or and other seasonal factors), and by year.
    Description
    Presented at the Eighth Symposium on Harmful Algae in the U.S. November 15 - 19, 2015, Long Beach, California
    Collections
    • Marine Policy Center (MPC)
    Suggested Citation
    Presentation: Moore, Tamecia, Diaz, Roberto E., Ullmann, Steven G., Hoagland, Porter, Beet, Andrew R., Jin, Di, Kirkpatrick, Barbara, Kirkpatrick, Gary, Fleming, Lora E., Hitchcock, Gary, Drennon, Michael, Kumar, Naresh, "Testing for the potential effects of Karenia brevis on school absences [poster]", Presented at the Eighth Symposium on Harmful Algae in the U.S. November 15 - 19, 2015, Long Beach, California, https://hdl.handle.net/1912/8623
     

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