You may want to make sure that you've gotten Hep A and Hep B shots to avoid the possibility of a co-infection. Although my doc required me to wait 6 months before final shot in each series could be given.
I travel all over the place and the only shots I got were hep a and b.it is a series of shots called twinrex and they give them to you in stages not all at once that is how my doctors gave it to me.Slow
Hep B shots are on the list but they require a series of shots so if you are going in Sept. you won't have time to do them all and complete the series before you leave.
Here is a list of the shots recommended for travel to Haiti
http://www.ci.pasadena.ca.us/publichealth/disease_prevention/travel%20clinic/travel_shotslist.asp