Deadly Snails Invading Houston; Carry Meningitis HOUSTON, TX A Giant African Land Snail has been discovered in the backyard of a Houston home. Now, researchers are sending out a serious warning. Scientists say the snails ARE extremely dangerous and they spread a deadly disease. People are being warned not to touch them. http://kplr11.com/2013/05/08/deadly-snails-invading-houston-carry-meningitis/ They can cause meningitis!