Travel vaccination works by strengthening the immune system to help prevent illness from infectious diseases that may be encountered abroad. Ideally, women who need travel vaccinations should have these before they become pregnant, but this is not always possible. In most cases, live vaccines should be avoided during pregnancy because there are theoretical concerns for fetal harm.
In the case of the typhoid vaccine, pregnancy is not a contraindication for this vaccine and women who are anticipating travel to endemic areas like Latin America, Africa and Asia should be counseled about vaccination. There are several forms of the typhoid vaccine available, but experts recommend the use of capsular vaccines. A new vaccine for malaria is also being developed which can be administered during pregnancy, but there is not a single vaccine today which is specifically approved by the FDA for use during pregnancy.
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