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Table 2 Distribution of the type I and type II strains stratified over time and age groups

From: Two variants among Haemophilus influenzae serotype b strains with distinct bcs4, hcsA and hcsB genes display differences in expression of the polysaccharide capsule

   

Capsule locus type

Time period of isolation

Patient's age

No. of strains

I

II

1983–1995

All

388

368

20

 

≤ 4 years

255

235

20

 

> 4 years

133

133

0

1996–2006

All

282

281

1

 

≤ 4 years

143

142

1

 

> 4 years

139

139

0