Vaccines Work Submitted by Nicole Yordán López on 27 April 2017 - 2:36pm #VaccinesWorkWorld Immunization Week is celebrated during the last week of April and its purpose to protect people of all ages against preventable diseases through the use of vaccines. #VaccinesWork is this year’s theme.Read more about Vaccines Work Nicole Yordán López's blogLog in or register to post commentsEspañol