TY - BOOK TI - International travel and health SN - 9789241580403, 0254296X AV - RA643 .I58 2008 PY - 2008/// CY - Geneva PB - World Health Organization KW - Communicable diseases--Prevention KW - Travel KW - Vaccination KW - Diseases--Risk factors KW - Electronic books N1 - Includes bibliographical references and indexes; Electronic reproduction ER -