Effects of rainfall on incidental and host-maintained leptospiral infections in cattle in a tropical region

被引：23

作者：

Correia, Lucas ^{[1
]}

Loureiro, Ana Paula ^{[1
]}

Lilenbaum, Walter ^{[1
]}

机构：

[1] Univ Fed Fluminense, Lab Bacteriol Vet, Rua Hernani Mello 101, BR-24210030 Niteroi, RJ, Brazil

来源：

VETERINARY JOURNAL | 2017年 / 220卷

关键词：

Hardjo; Incidental serovars; Leptospira; Rainfall; Renal carrier; LEVEL RISK-FACTORS; ANIMAL LEPTOSPIROSIS; SPP; KIDNEY; DETECT; DAIRY; PCR;

D O I：

10.1016/j.tvjl.2016.12.016

中图分类号：

S85 [动物医学（兽医学）];

学科分类号：

0906 ;

摘要：

This study investigated the effects of rainfall on incidental and host-maintained leptospiral infections in cattle in a tropical region. Serum and urine specimens were collected from 582 bovines in a slaughterhouse. Seropositivity during rainy seasons was 43.6% (158/362) and during dry seasons was 31.8% (70/220; P = 0.0047). Positivity by urine PCR in rainy seasons was 423% (153/362) and 33.2% (73/220; P = 0.0296) in dry seasons. Additionally, increases in rainfall rates had different effects on host-adapted (serogroup Sejroe) and incidental (all other serogroups) leptospiral infections. There was a significant increase in the number of cattle shedding Leptospira during the rainy season (CI 1.04-2.09; P = 0.0296), suggesting temporary (transient) urinary shedding of incidental serogroups. Incidental and host-maintained Leptospira infections in cattle require different diagnostic techniques and control strategies. (C) 2017 Elsevier Ltd. All rights reserved.

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收藏

页码：63 / 64

页数：2

相关论文

共 9 条

[1] Leprospira and leptospirosis [J].

Adler, Ben ;

de la Pena Moctezuma, Alejandro .

VETERINARY MICROBIOLOGY, 2010, 140 (3-4) :287-296

[2] Herd-level risk factors associated with Leptospira spp. seroprevalence in dairy and beef cattle in Spain [J].

Alonso-Andicoberry, C ;

García-Peña, FJ ;

Pereira-Bueno, J ;

Costas, E ;

Ortega-Mora, LM .

PREVENTIVE VETERINARY MEDICINE, 2001, 52 (02) :109-117

[3] Animal leptospirosis in small tropical areas [J].

Desvars, A. ;

Cardinale, E. ;

Michault, A. .

EPIDEMIOLOGY AND INFECTION, 2011, 139 (02) :167-188

[4] Animal Leptospirosis [J].

Ellis, William A. .

LEPTOSPIRA AND LEPTOSPIROSIS, 2015, 387 :99-137

[5] Comparison of conventional PCR, quantitative PCR, bacteriological culture and the Warthin Starry technique to detect Leptospira spp. in kidney and liver samples from naturally infected sheep from Brazil [J].

Fornazari, Felipe ;

da Silva, Rodrigo Costa ;

Richini-Pereira, Virginia Bodelao ;

Orsini Beserra, Hugo Enrique ;

Rui Luvizotto, Maria Cecilia ;

Langoni, Helio .

JOURNAL OF MICROBIOLOGICAL METHODS, 2012, 90 (03) :321-326

[6] Urinary PCR as an increasingly useful tool for an accurate diagnosis of leptospirosis in livestock [J].

Hamond, C. ;

Martins, G. ;

Loureiro, A. P. ;

Pestana, C. ;

Lawson-Ferreira, R. ;

Medeiros, M. A. ;

Lilenbaum, W. .

VETERINARY RESEARCH COMMUNICATIONS, 2014, 38 (01) :81-85

[7] Differences between seroreactivity to leptospirosis in dairy and beef cattle from the same herd in Rio de Janeiro, Brazil [J].

Martins, Gabriel ;

Penna, Bruno ;

Lilenbaum, Walter .

TROPICAL ANIMAL HEALTH AND PRODUCTION, 2012, 44 (03) :377-378

[8] A cross sectional observational study to estimate herd level risk factors for Leptospira spp. serovars in small holder dairy cattle farms in southern Chile [J].

Salgado, Miguel ;

Otto, Barbara ;

Sandoval, Errol ;

Reinhardt, German ;

Boqvist, Sofia .

BMC VETERINARY RESEARCH, 2014, 10

[9] Evaluation of a SYTO9 real-time polymerase chain reaction assay to detect and identify pathogenic Leptospira species in kidney tissue and urine of New Zealand farmed deer [J].

Subharat, Supatsak ;

Wilson, Peter R. ;

Heuer, Cord ;

Collins-Emerson, Julie M. .

JOURNAL OF VETERINARY DIAGNOSTIC INVESTIGATION, 2011, 23 (04) :743-752