TABLE 3.

Changes in resistance among H. influenzae strains from meningitis patients, by year, as identified by PCR

Resistance classNo. (%) of strains in the following yr:
1999200020012002Total
BLNAS14 (34.1)24 (34.8)45 (33.3)31 (21.3)115 (29.1)
BLPAR13 (31.7)14 (20.3)17 (12.6)17 (11.3)61 (15.4)
Low-BLNAR12 (29.2)24 (34.8)40 (29.6)45 (30.0)121 (30.6)
BLNAR0 (0.0)4 (5.8)19 (14.1)32 (21.3)55 (13.9)
BLPACR I1 (2.4)3 (4.3)12 (8.9)19 (13.3)36 (9.1)
BLPACR II1 (2.4)0 (0.0)2 (1.5)4 (2.7)7 (1.8)
    Total4169135150395 (100.0)