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Table 1 Growth rates of H. influenzae isolates grown at different pH

From: There is a specific response to pH by isolates of Haemophilus influenzae and this has a direct influence on biofilm formation

Strain Type pH 6.8 pH 7.0 pH 8.0
Rd KW20 Serotype d, non-capsular 0.414 ± 0.08* 0.515 ± 0.10 0.443 ± 0.12
86-028NP NTHi, OM 0.330 ± 0.09 0.483 ± 0.05 0.435 ± 0.04
R2846 NTHi, OM 0.405 ± 0.11 0.587 ± 0.04 0.477 ± 0.09
NTHi-1 NTHi, lung 0.412 ± 0.07 0.243 ± 0.01 0.410 ± 0.08
R2866 NTHi, blood 0.291 ± 0.04 0.194 ± 0.01 0.300 ± 0.05
285 NTHi, OM 0.293 ± 0.05 0.367 ± 0.07 0.422 ± 0.10
C486 NTHi, OM 0.480 ± 0.03 0.446 ± 0.04 0.554 ± 0.05
Hi667 NTHi, OM 0.281 ± 0.04 0.338 ± 0.01 0.234 ± 0.02
Eagan Serotype b, CSF 0.358 ± 0.03 0.386 ± 0.07 0.391 ± 0.08
R3264 NTHi, middle ear of healthy child 0.256 ± 0.04 0.303 ± 0.03 0.236 ± 0.06
86-66MEE NTHi, OM 0.295 ± 0.04 0.258 ± 0.02 0.200 ± 0.04
  1. *doubling per hour.