A novel <i>Sporothrix brasiliensis</i> genomic variant in Midwestern Brazil: evidence for an older and wider sporotrichosis epidemic

  • João Eudes Filho (Contributor)
  • Isabele Barbieri dos Santos (Creator)
  • Carmélia Matos Santiago Reis (Creator)
  • José S.L. Patané (Creator)
  • Verenice Paredes (Creator)
  • João Paulo Romualdo Alarcão Bernardes (Creator)
  • Sabrina dos Santos Costa Poggiani (Creator)
  • Talita de Cássia Borges Castro (Contributor)
  • Oscar Mauricio Gomez (Creator)
  • Sandro Antonio Pereira (Creator)
  • Edvar Yuri Pacheco Schubach (Creator)
  • Kamila Peres Gomes (Creator)
  • Heidi Mavengere (Creator)
  • Lucas Gomes de Brito Alves (Contributor)
  • Joaquim Lucas (Creator)
  • Hugo Costa Paes (Creator)
  • Patrícia Albuquerque (Creator)
  • Laurício Monteiro Cruz (Creator)
  • Juan G. McEwen (Creator)
  • Jason E. Stajich (Creator)
  • Rodrigo Almeida-Paes (Creator)
  • Rosely Maria Zancopé-Oliveira (Creator)
  • Daniel R. Matute (Creator)
  • Bridget Barker (Creator)
  • Maria Sueli Soares Felipe (Creator)
  • Marcus Teixeira (Contributor)
  • André Moraes Nicola (Creator)

Dataset

Description

Sporotrichosis is a subcutaneous infection caused by fungi from the genus <i>Sporothrix</i>. It is transmitted by inoculation of infective particles found in plant-contaminated material or diseased animals, characterizing the classic sapronotic and emerging zoonotic transmission, respectively. Since 1998, southeastern Brazil has experienced a zoonotic sporotrichosis epidemic caused by <i>S. brasiliensis</i>, centred in the state of Rio de Janeiro. Our observation of feline sporotrichosis cases in Brasília (Midwestern Brazil), around 900 km away from Rio de Janeiro, led us to question whether the epidemic caused by <i>S. brasiliensis</i> has spread from the epicentre in Rio de Janeiro, emerged independently in the two locations, or if the disease has been present and unrecognized in Midwestern Brazil. A retrospective analysis of 91 human and 4 animal cases from Brasília, ranging from 1993 to 2018, suggests the occurrence of both sapronotic and zoonotic transmission. Molecular typing of the calmodulin locus identified <i>S. schenckii</i> as the agent in two animals and all seven human patients from which we were able to recover clinical isolates. In two other animals, the disease was caused by <i>S. brasiliensis</i>. Whole-genome sequence typing of seven <i>Sporothrix</i> spp. strains from Brasília and Rio de Janeiro suggests that <i>S. brasiliensis</i> isolates from Brasília are genetically distinct from those obtained at the epicentre of the outbreak in Rio de Janeiro, both in phylogenomic and population genomic analyses. The two <i>S. brasiliensis</i> populations seem to have separated between 2.2 and 3.1 million years ago, indicating independent outbreaks or that the zoonotic <i>S. brasiliensis</i> outbreak might have started earlier and be more widespread in South America than previously recognized.
Date made available2020
Publisherfigshare Academic Research System

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