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Volume 29, Number 10—October 2023
Dispatch

Angiostrongylus cantonensis Infection in Brown Rats (Rattus norvegicus), Atlanta, Georgia, USA, 2019–2022

Nicole L. Gottdenker, Rafael Antonio Nascimento Ramos, Hassan Hakimi, Brittany McHale, Sam Rivera, Bryce M. Miller, Elizabeth W. Howerth, Caitlin E. Burrell, Justin M. Stilwell, Rita McManamon, and Guilherme G. VerocaiComments to Author 
Author affiliations: University of Georgia College of Veterinary Medicine, Athens, Georgia, USA (N.L. Gottdenker, B. McHale, B.M. Miller, E.W. Howerth, C.E. Burrell, R. McManamon); Texas A&M University School of Veterinary Medicine and Biomedical Sciences, College Station, Texas, USA (R.A.N. Ramos, H. Hakimi, G.G. Verocai); Zoo Atlanta, Atlanta, Georgia, USA (S. Rivera); Mississippi State University College of Veterinary Medicine, Starkville, Mississippi, USA (J.M. Stilwell)

Main Article

Table

Histopathologic findings of Angiostrongylus cantonensis nematode infection and molecular confirmation in brown rats (Rattus norvegicus), Atlanta, Georgia, USA, 2019–2022*

ID, age class/sex Case submission date Histopathologic findings GenBank accession no.
Case 1, adult/M
 2019 Feb 19
 Brain: hemorrhagic and lymphohistiocytic meningoencephalitis with intralesional nematodiasis (adult nematodes, presumptive Angiostrongylus spp.)
 OQ793715
Case 2, adult/F
 2021 Feb 12
 Lung: severe multifocal chronic nodular nematodiasis (adult nematodes and larvated ova, presumptive Angiostrongylus spp.)
 OQ793716
Case 3, juvenile/ unknown
2021 Jan 20
 Heart: intravascular (i.e., cardiac chamber, pulmonary artery) nematodiasis
 NA
Case 4, Age unknown/unknown
 2021 Aug 24
 Lung: pulmonary arterial nematodiasis; pulmonary hemorrhage and edema
 NA
Case 5, adult/unknown
 2022 Apr 25
 Heart and pulmonary artery: cardiac nematodiasis with endothelial pulmonary aortic subendothelial myxomatous change
Lung: nematode cross section with similar characteristics to heart nematodes
 NA
Case 6, adult/unknown
 2022 Aug 09
 Heart and pulmonary artery: intraventricular and intra-arterial nematodiasis
Lung: moderate intraluminal, peritracheal, and pulmonary hemorrhage
 OQ793717
Case 7, adult/M 2022 Oct 18 Lung: eosinophilic pulmonary arteritis with degenerate intraluminal nematodes OQ793718

*Pre- or postmortem predation of some rats might have occurred before rats were found. Thus, representative samples of all organs might not have been available for evaluation and in some cases, sex or age class could not be determined. ID, identification; NA, not available.

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Page created: August 14, 2023
Page updated: September 20, 2023
Page reviewed: September 20, 2023
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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