Join Date: Jan 2012
Location: United Kingdom (have lived previously in the USA).
Mentioned: 65 Post(s)
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The odds of catching a VPD are quite small. I think of the common schedule of vaccination it's only polio is potentially in the water - and that's as unlikely in Brazil as in USA (sorry if I make wrong assumption about your home country).
Did you want to post here from the provax side too? If not stop here and ask a mod to move you to inv. The only way to really get rid if your worry in my opinion would be to catchup before your next trip.
The odds of catching the diseases are small. The odds of any serious problems following vaccination are much smaller.