Certainly a hazard there.
Is that a statistic from data or a fear/concern?
Thankfully, Charismatic/Pentecostal Christianity where God manifests His power, healing etc. authentically, dramatically is also growing dramatically in South and Central America.
From time to time over the last few months I have read articles that contend that Islam is the fastest growing religion in South and Central America. I also have friends who travel to South America for extended periods several times a year and they tell me what they have observed first hand and what they have read in the local press.