I have to take offense at the implication that voodoo is either a religion [it isn't, it is a long dead tradition like paganism, that was briefly revived by the Duvaliers], or a practice common in Haitian people.
My girlfriend is first generation American, her father and most of his siblings immigrated to the US from Haiti.
All but about 10% of Haitians are Christian.
Sorry but a huge number of Haitians and Cubans and those in Mexico---not to mention Louisiana and Brownsville Texas follow the faith. as a part of Christianity.
This faith came from Yoruba in Africa and was brought to America by the slaves at one time. Because they were not allowed to follow their faith they mixed in into the christian faith.
Most of the followers in the early days changed the names of their gods to the names of Catholic Saints as in Chango was the name they called John the Baptist. Santa Barbara came from Mary, very complex.
Most people consider them selves good catholics and would be insulted by being called anything else. Still the faith lives on intermixed with Christianity.
Interesting how religion evolves, Brownsville TX. has the largest company's that deal in the faith. One can get catalogers on line or write to the Church of the 7 saints there to receive instructions in the faith.
BTW have you ever been to a Baptist church that believes in exorcism, of talking in Tungus and the snake handlers???
And I have not the spelling for this but it was said that 50 years ago the Voodoo stopped the act of ---Palo mendera--, Yet in Mexico we still find people with their Nunga pots full of copper Penny's, iron nails and human genitals to protect the Pot growers.
Darn I wish I could spell better.