Amoxicillin and Ceftriaxone: A Synergistic Association Against Listeria monocytogenes.

Among 15 strains of Listeria monocytogenes tested, a synergy between amoxicillin and ceftriaxone was observed in 14 (93%) according to minimal inhibitory concentration strips and 12 (80%) per the checkerboard methods, as well as for 2 of the 3 strains tested by the time-killing curve. This association may be an alternative treatment for listeriosis in the future.