Multidrug-Resistant Methicillin-Resistant Staphylococcus aureus Associated with Bacteremia and Monocyte Evasion, Rio de Janeiro, Brazil

Details

• Alternative Title:
  Emerg Infect Dis
• Personal Author:
  Viana, Alice Slotfeldt ; Nunes Botelho, Ana Maria ; Moustafa, Ahmed M. ; Boge, Craig L.K. ; Pires Ferreira, Adriana Lucia ; da Silva Carvalho, Maria Cícera ; Guimarães, Márcia Aparecida ; Costa, Bruno de Souza Scramignon ; de Mattos, Marcos Corrêa ; Maciel, Sabrina Pires ; Echevarria-Lima, Juliana ; Narechania, Apurva ; O’Brien, Kelsey ; Ryan, Chanelle ; Gerber, Jeffrey S. ; Carvalho, Bernadete Teixeira Ferreira ; Figueiredo, Agnes Marie Sá ; Planet, Paul J.
• Description:
  We typed 600 methicillin-resistant Staphylococcus aureus (MRSA) isolates collected in 51 hospitals in the Rio de Janeiro, Brazil, metropolitan area during 2014-2017. We found that multiple new clonal complex (CC) 5 sequence types had replaced previously dominant MRSA lineages in hospitals. Whole-genome analysis of 208 isolates revealed an emerging sublineage of multidrug-resistant MRSA, sequence type 105, staphylococcal cassette chromosome mec II, spa t002, which we designated the Rio de Janeiro (RdJ) clone. Using molecular clock analysis, we hypothesized that this lineage began to expand in the Rio de Janeiro metropolitan area in 2009. Multivariate analysis supported an association between bloodstream infections and the CC5 lineage that includes the RdJ clone. Compared with other closely related isolates, representative isolates of the RdJ clone more effectively evaded immune function related to monocytic cells, as evidenced by decreased phagocytosis rate and increased numbers of viable unphagocytosed (free) bacteria after in vitro exposure to monocytes.
• Subjects:
  Bacteremia Humans Methicillin-Resistant Staphylococcus Aureus Monocytes Staphylococcal Infections
• Source:
  Emerg Infect Dis. 27(11):2825-2835
• Pubmed ID:
  34670645
• Pubmed Central ID:
  PMC8544994
• Document Type:
  Journal Article
• Funding:
  R01 AI137526/AI/NIAID NIH HHSUnited States/
• Place as Subject:
  Brazil
• Volume:
  27
• Issue:
  11
• Collection(s):
  Emerging Infectious Diseases
• Main Document Checksum:
  urn:sha256:0f24d5e19719df86f4a0268caabeb7cc70f777e3ce23aabb6184efb0c75001b2
• Download URL:
  https://stacks.cdc.gov/view/cdc/111430/cdc_111430_DS1.pdf
• File Type:
  [PDF - 2.93 MB ]