Information about Giant African Land Snails (GALS)
These snails can cause extensive damage to agricultural crops and pose a risk to human health.
Read more information at the links below:
http://www.aphis.usda.gov/lpa/issues/gals/gals.html
http://www.aphis.usda.gov/oa/pubs/pa_phgals.pdf
http://www.cdc.gov/ncidod/dpd/parasites/angiostrongylus/factsht_angiostrongylus.htm