Serosurvey of <i>Leptospira</i> spp. and <i>Toxoplasma gondii</i> in rats captured from two zoos in Southern Brazil

Pellizzaro, Maysa; Conrado, Francisco de Oliveira; Martins, Camila Marinelli; Joaquim, Sâmea Fernandes; Ferreira, Fernando; Langoni, Helio; Biondo, Alexander Welker

doi:10.1590/0037-8682-0138-2017

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Short Communications • Rev. Soc. Bras. Med. Trop. 50 (06) • Nov-Dec 2017 • https://doi.org/10.1590/0037-8682-0138-2017 copy

Serosurvey of Leptospira spp. and Toxoplasma gondii in rats captured from two zoos in Southern Brazil

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

INTRODUCTION:

Norway rats (Rattus norvegicus) are zoonotic reservoirs for Leptospira spp. and Toxoplasma gondii, and influence diseases in urban areas.

METHODS:

Free-ranging and laboratory-raised rats from two zoos in southern Brazil were tested for Leptospira spp. and T. gondii using microscopic agglutination and modified agglutination tests, respectively.

RESULTS:

Overall, 25.6% and 4.6% free-ranging rats tested positive for Leptospira spp. and T. gondii, respectively, with co-seropositivity occurring in two animals. For laboratory-raised rats, 20% tested positive for Leptospira spp. Also, Leptospira biflexa serovar Patoc and Leptospira noguchii serovar Panama were found.

CONCLUSIONS:

Serosurveys can show the environmental prevalence of zoonotic pathogens.

Keywords:
Norway rat; Leptospirosis; Toxoplasmosis

Serovars	Number	Title
Copenhageni	4	(400, 400, 200, 200)
Icterohaemorrhagiae	3	(100, 100, 100)
Patoc	7	(200, 200, 100, 100, 100, 100, 100)
Panama	1	(1,600)
Sentot	1	(100)
Djasiman	3	(200, 100, 100)
Castellonis	1	(100)
Hardjo-minis	1	(200)
Andamana	1	(100)
Total	22*	-

		Leptospira spp.
		Positive			Total	Negative
		Public Promenade (n)	City Zoo (n)	Laboratory-raised nursery (n)
Sex	Females	4	4	1	9/30	21/30
	Males	3	0	3	6/33	27/33
Age	Juveniles	3	0	0	3/23	20/23
	Adults	4	4	4	12/40	28/40

		Toxoplasma gondii
		Positive			Total	Negative
		Public Promenade (n)	City Zoo (n)	Laboratory-raised nursery (n)
Sex	Females	0	1	0	1/30	29/30
	Males	1	0	0	1/33	32/33
Age	Juveniles	0	0	0	0/23	23/23
	Adults	1	1	0	2/40	38/40

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[1] Corresponding author: Dr. Alexander Welker Biondo e-mail:abiondo@ufpr.br