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Volume 26, Number 12—December 2020
Dispatch

Hypervirulent Klebsiella pneumoniae as Unexpected Cause of Fatal Outbreak in Captive Marmosets, Brazil

Juliana Mariotti Guerra, Natália Coelho Couto de A. Fernandes, Alessandra Loureiro Morales dos Santos, Joana de Souza Pereira Barrel, Bruno Simões Sergio Petri, Liliane Milanelo, Monique Ribeiro Tiba-Casas, Alcina Maria Liserre, Cláudia Regina Gonçalves, Cláudio Tavares Sacchi, José Luiz Catão-Dias, and Carlos Henrique CamargoComments to Author 
Author affiliations: Instituto Adolfo Lutz, São Paulo, Brazil (J.M. Guerra, N.C.C.A. Fernandes, A.L.M. dos Santos, J.S.P. Barrel, M.R. Tiba-Casas, A.M. Liserre, C.R Gonçalves., C.T Sacchi., C.H. Camargo); Universidade de São Paulo, São Paulo (N.C.C.A. Fernandes, A.L.M. dos Santos, J.L. Catão-Dias); Parque Ecológico do Tietê, São Paulo (B.S.S. Petri, L. Milanelo)

Main Article

Table 1

Histologic findings for tissue samples from captive marmosets analyzed by microscopic evaluation in investigation of a fatal epizootic caused by highly virulent Klebsiella pneumoniae sequence type 86 strain P04 in Brazil, 2019

Organ No. samples Histologic findings Positive/total
Liver
10
 Sinusoidal leukocytosis, predominantly with neutrophilia 9/10
Hemorrhagic foci 7/10
Hepatitis necrotizing, suppurative, acute, multifocal 2/10
Intravascular fibrin deposition
 1/10
Spleen
9
 Splenitis necrotizing, suppurative, acute, multifocal 8/9
Hemorrhage 8/9
Many bacilli on the red pulp
 8/9
Lung
10
 Subacute interstitial pneumonia 8/10
Occasional free bacilli 7/10
Hemorrhage
 1/10
Cerebrum
10
 Bacilli on leptomeninges
 1/10
Adrenal
2
 Adrenalitis necrotizing, suppurative, acute, multifocal
 2/2
Heart
7
 Myocarditis necrotizing, acute, multifocal
 1/7
Intestine
7
 Enteritis neutrophilic, acute, diffuse
 2/7
Kidney 8 Granular tubular casts 4/8
Tubular acute necrosis 1/8

Main Article

Page created: October 13, 2020
Page updated: November 19, 2020
Page reviewed: November 19, 2020
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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