Emergence of Nonencapsulated and Encapsulated Non-b-Type Invasive Haemophilus influenzae Isolates in Portugal (1989-2001)

AUTOR(ES)

Bajanca, Paula

FONTE

American Society for Microbiology

RESUMO

Phenotypes and genetic relatedness of invasive Haemophilus influenzae strains were evaluated from 1989 through 2001. Among 119 isolates, multidrug resistance decreased (from 50 to 0%), the level of H. influenzae serotype b (Hib) strains declined (from 81 to 16%), the level of noncapsulated strains rose (from 19 to 80%), and the first invasive H. influenzae serotype f strain was described. This study documents changes in invasive H. influenzae infections in Portugal, i.e., the emergence of non-type-b strains that are genetically diverse and unrelated to Hib.

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