(...)
"Of the four major lineages, two carry variants in penA (encoding penicillin-binding protein 2 [PBP2], the main target of ceftriaxone) that increase ceftriaxone resistance"
(...)
"Of the four major lineages, two carry variants in penA (encoding penicillin-binding protein 2 [PBP2], the main target of ceftriaxone) that increase ceftriaxone resistance"