evidence: Provide age-appropriate immunizations during an initial encounter with a newly arrived immigrant or migrant, and complete immunization series according to ACIP schedules during subsequent encounters . A vaccine series does not need to be restarted if documentation of prior doses is available. [...] Immigrants and other migrants are likely to travel back to their country of origin and might be at risk for travel-associated infectious diseases (see Sec. 9, Ch. 9, Visiting Friends & Relatives: VFR Travel). Ask these patients about future travel plans to allow time to plan appropriate travel vaccines, medications, and advice.