I can't get a signal http://pron.in.net/ pron video LITTLE ROCK — The Arkansas Department of Health (ADH) has confirmed a case of a rare form of parasitic meningitis. A case of primary amebic meningoencephalitis (PAM) -- a very rare form of meningitis caused by an ameba associated with warm rivers, lakes and streams -- was confirmed with the assistance of the Centers for Disease Control and Prevention.