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Volume 31, Number 9—September 2025

Dispatch

Rapidly Progressing Melioidosis Outbreak in City Center Zoo, Hong Kong, 2024

Christopher J. Brackman1, Ivan Tak-Fai Wong1, Allen S.L. Chan1, Patrick C.K. Pun, Dorothy Hong-Ting Cheung, Anne C.N. Tse, Carlton P.M. Yuen, Pierra Y.T. Law, Wing-Yin Tam, Franklin Wang-Ngai ChowComments to Author , Gilman Kit-Hang Siu, and Thomas Hon-Chung SitComments to Author 
Author affiliation: Government of the Hong Kong Special Administrative Region, Hong Kong, China (C.J. Brackman, A.S.L. Chan, P.C.K. Pun, A.C.N. Tse, C.P.M Yuen, P.Y.T. Law, T.H.-C. Sit); Polytechnic University, Hong Kong (I.T.-F. Wong, D.H.-T. Cheung, W.-Y. Tam, F.W.-N. Chow, G.K.-H. Siu)

Main Article

Figure 3

Spatial distribution and genetic relationships among Burkholderia pseudomallei STs reported in China and a rapidly progressing melioidosis outbreak in city center zoo, Hong Kong, 2024. Colored circles on map show locations where different STs were reported; sections indicate relative percentages of each ST in each location. Red numbers on the phylogenetic tree indicate core-genome single-nucleotide polymorphism differences between strains; black numbers represent bootstrap values. The tree is midpoint rooted. The reference genome used for comparison is a pseudogenome constructed by concatenating the first allele of each core-genome multilocus sequence typing gene available in the PubMLST database (https://pubmlst.org). Scale bar indicates nucleotide substitutions per site. ST, sequence type.

Figure 3. Spatial distribution and genetic relationships among Burkholderia pseudomallei STs reported in China and a rapidly progressing melioidosis outbreak in city center zoo, Hong Kong, 2024. Colored circles on map show locations where different STs were reported; sections indicate relative percentages of each ST in each location. Red numbers on the phylogenetic tree indicate core-genome single-nucleotide polymorphism differences between strains; black numbers represent bootstrap values. The tree is midpoint rooted. The reference genome used for comparison is a pseudogenome constructed by concatenating the first allele of each core-genome multilocus sequence typing gene available in the PubMLST database (https://pubmlst.org). Scale bar indicates nucleotide substitutions per site. ST, sequence type.

Main Article

1These authors contributed equally to this article.

Page created: July 17, 2025
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