I have my trip all planned and I am so excited, but I am so confused about Twinrix. We are staying the first and last night at Adventure Inn and the rest of the nights at Korrigan Lodge in Puerto Viejo. My boyfriend and I had decided to get the Twinrix as a safety percaution, until he found out that it isn't covered in any way under his health plan. The total cost is in the $350 range and I just don't know if it is necessary. I have been doing my research about it, but I am still confused. Do the locals get these vaccines? Travelers? Is it really a big issue? I heard the water is very clean, but I would love some feedback!