You are not required to get any vaccinations before you visit Vietnam, unless you’re traveling from a country that the CDC has flagged for yellow fever. Travel doctors or the CDC may recommend some medications, depending on what you plan to do.
Malaria is possible in rural parts of Vietnam, and there have been cases in reported in Mekong Delta. The CDC only recommends “mosquito avoidance” for this area. Mosquito repellent with DEET is shown to effectively ward off mosquitos.
Japanese encephalitis is only of concern for people who intend to work closely with livestock, so it’s probably not a cause for concern for you on your vacation.
If you have any concerns, consult wtih your physician. Travel doctors typically have the latest information about what infectious diseases are of most concern in each region.
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