There's nothing particularly classified about the public health measures taken in preparation for Afghanistan. They're fairly routine. The risks we watch out for there are primarily arthropod-borne ones. We have the normal immunizations, but the acute risks are arthropod-borne malaria and leishmaniasis. For malaria, there's a medical approach to prevention, along with barrier approaches and vector control approaches.
I don't actually accept your premise that thimerisol is a significant risk. There are many studies that have been done on vaccine safety, and there has been absolutely no demonstrated link between the presence of thimerisol and excess side effects in the vaccine.