0
i d b means i don't know
bxvbjbxzkjbKJB jbzjvnisdvnkz idb
The most common symptoms of IDB are:
The best estimate can be found at http://www.census.gov/ipc/www/idb/country/rpportal.html
it has decreased
go to http://www.census.gov/ipc/www/idb/country.php