David C Bean1, John D Klena. 1. Plant and Microbial Science Department, University of Canterbury, Christchurch, New Zealand. d.c.bean@qmul.ac.uk
Abstract
OBJECTIVES: To determine the relationship between New Zealand isolates of antibiotic-resistant Streptococcus pneumoniae and internationally widespread resistant clones. METHODS: Fifty-nine isolates representing both invasive and non-invasive pneumococci from multiple locations, serotypes and years were analysed by multilocus sequence typing. RESULTS: Major international clones, including Spain(23F)-1, France(9V)-3 and Taiwan(19F)-14, were found to be present in New Zealand. A one-allele variant of the Taiwan(19F)-14 clone (aroE 15-->4, ST 271) was particularly prominent. CONCLUSIONS: Antibiotic-resistant pneumococci have not evolved de novo in New Zealand, but were introduced to the country during the early 1990s.
OBJECTIVES: To determine the relationship between New Zealand isolates of antibiotic-resistant Streptococcus pneumoniae and internationally widespread resistant clones. METHODS: Fifty-nine isolates representing both invasive and non-invasive pneumococci from multiple locations, serotypes and years were analysed by multilocus sequence typing. RESULTS: Major international clones, including Spain(23F)-1, France(9V)-3 and Taiwan(19F)-14, were found to be present in New Zealand. A one-allele variant of the Taiwan(19F)-14 clone (aroE 15-->4, ST 271) was particularly prominent. CONCLUSIONS: Antibiotic-resistant pneumococci have not evolved de novo in New Zealand, but were introduced to the country during the early 1990s.