This is sad. Another child dies from PAM (primary amoebic meningoencephalitis). This disease is caused by a common freshwater amoeba that in the right conditions can be fatal if contracted. Avoid swimming in warm, low water level lakes and ponds if possible.
http://shine.yahoo.com/parenting/boy-9-dies-rare-amoeba-infection-swimming-lake-182700398.html
http://shine.yahoo.com/parenting/boy-9-dies-rare-amoeba-infection-swimming-lake-182700398.html