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Don't assume the sand is safe
Date:4/11/2012

and and water are very different," said Solo-Gabriele. "The sand provides more protection against the effects of solar radiation, which has a tendency to inactivate microbes in water. Sand may also protect microbes from predators (other microbes) that are found exclusively in water."

To develop the guidelines, the scientists ran one million simulations of the number of microbes in each gram of sand, the transfer of sand from hand to mouth and the ingestion rate. The researchers determined the risk of having 19 cases per 1,000 beachgoers--the level used by the EPA for swimming in marine recreational waters.

The team also documented the levels of pathogens found in the sand at Hobie Cat Beach, in Miami. The findings indicate that levels of harmful microbes at the beach site were low, when compared to the reference levels and therefore safe for beachgoers.

However, studies have shown that children have a higher illness risk than adults from beach and sand exposures. For that reason, the researchers will now focus on studies of kids' play behavior in sand, to better estimate the acceptable levels of microbes that can cause diseases in children.

"Parents of young children don't need to overreact to our findings and they can reduce their child's infectious risk by basic hygiene practices such as hand washing before eating or drinking and taking a shower," said Shibata.
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Contact: Annette Gallagher
a.gallagher1@umiami.edu
305-284-1121
University of Miami
Source:Eurekalert

Page: 1 2

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