Antimicrobial susceptibility of invasive pneumococcal isolates from a region in south-west Sweden 1998-2001.

• Invasive disease caused by antibiotic resistant pneumococci is a worldwide problem. All invasive pneumococcal strains in an area of south-west Sweden with 1.7 million inhabitants were collected prospectively during 1998-2001. Minimum inhibitory concentrations (MICs) were determined by E-test and correlated to serotypes and clinical characteristics. Of 827 strains, 744 (90%) were susceptible (S) to all agents tested and 83 (10%) were indeterminate (I) or resistant (R) to at least 1 agent. 22 isolates (2.7%) were I to penicillin (MIC >0.06 to < or = 1.0 mg/l), but none were R (MIC >1.0 mg/l). Numbers and proportions of decreased susceptibility against other agents tested were as follows: erythromycin R: 30 (3.6%), clindamycin R: 6 (0.7%), tetracycline R: 16 (1.9%), moxifloxacin R: 1 (0.1%), cotrimoxazole I: 17 (2%) and R: 31(4%). Non-susceptibility to at least 1 agent was not correlated with age, clinical manifestation, underlying diseases and outcome. The serotype distribution differed between non-susceptible and susceptible strains. The serotypes in the 7-valent pneumococcal conjugate vaccine covered 42% of all infections and 73% of those caused by non-susceptible strains. In conclusion, the impact of antibiotic resistance in invasive pneumococcal disease remains limited in south-west Sweden.

Nyckelord

Adolescent

Adult

Aged

Aged

80 and over

Child

Child

Preschool

Drug Resistance

Bacterial

Female

Humans

Infant

Infant

Newborn

Male

Microbial Sensitivity Tests

statistics & numerical data

Middle Aged

Penicillins

pharmacology

Pneumococcal Infections

drug therapy

epidemiology

Streptococcus pneumoniae

drug effects

pathogenicity

Sweden

epidemiology

Medical sciences

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)