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. 2017 Nov 15;2(6):e00261-17. doi: 10.1128/mSphere.00261-17

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FIG 1 — MenB-4C antigen frequency distribution in NmB U.S. isolates (n = 442). (A) Prevalence of PorA VR2 subtypes. Most of the NmB isolates belonged to the PorA 16 VR2 subtype (20.4%), followed by the PorA 14 VR2 subtype (19.9%). PorA VR2 subtype 4 is expressed in 5.9% of the isolates. (B) Frequency distribution of fHbp MATS relative potencies (RPs). Among the U.S. NmB isolates tested, 262/442 (59%) expressed fHbp above the MATS lower limit of quantitation (LLOQ) (gray bars). (C) Frequency distribution of NHBA MATS relative potencies (RPs) among the U.S. NmB isolates (n = 442). A total of 440 of the NmB isolates tested expressed NHBA above the MATS LLOQ (gray bars). (D) Frequency distribution of NadA MATS relative potencies (RPs). Among the U.S. NmB isolates tested, only 132 of 442 (30%) expressed NadA above the MATS LLOQ (gray bars).