Institute, we found that the CHUGA-F75 strain was sensitive to gentamicin (MIC = 0.125 mg/L), doxycycline (MIC = 1 mg/L), and ciprofloxacin (MIC = 0.016 mg/L) and resistant to sulfamethoxazole/trimethoprim (MIC = 32 mg/L). F. marina was described as responsible for systemic disease in fishes (Lutjanus guttatus, the cultured spotted rose snapper) in Central America, whereas 4 F. salimarina strains have been isolated from costal seawater in Guangdong Province, China, and 1 strain of F. salina has

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... been grown from brackish seawater and seaweed off the coast of Galveston, Texas, USA (6-8). To our knowledge, these Francisella spp. were not responsible for human infection so far. This report, like previous descriptions of human infections caused by emergent Francisella spp., highlights that environmental or fishrelated Francisella spp. could be responsible for opportunistic human infections resembling tularemia.