[Brucella bacteremia reactivation 70 years after the primary infection]

After primary infection, some bacteria can remain in a latent state for several years before a new bacteremia, often due to a weakened immune status. This is common for Mycobacterium tuberculosis, less for other pathogens more difficult to have in mind when facing patients with fever. We report the case of an 84-year-old female patient presenting with fever in the months following antilymphoma chemotherapy, due to bacteremic brucellosis (with a hemophagocytic syndrome) probably latent after primary infection as a child.