Serological evidence of exposure to Coxiella burnetii in sheep and goats in central Portugal

Abstract

Please cite this article as: Anastácio, S., Tavares, N., Carolino, N., SidiBoumedine, K., da Silva, G.J., Serological evidence of exposure to Coxiella burnetii in sheep and goats in central Portugal, Veterinary Microbiology (2013), http://dx.doi.org/10. 1016/j.vetmic.2013.08.004 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. individual prevalence was estimated at 9.6% (95% CI: 6.9 to 12.2%), and it was higher 12 in goats (10.4%; 95% CI: 7.8 to 13%) than in sheep (8.6%; 95% CI: 5.8 to 11.4%). 13Sample positive percentages (S/P) ranged from 41.5 to 185.9%. S/P percent higher than

Q Fever Dairy Herd Status Determination Based on Serological and Molecular Analysis of Bulk Tank Milk

“…In fact, controversial data have been reported. An association has been described in some studies (Cetinkaya et al., ; García‐Pérez et al., ) while more recent ones did not found any (Anastacio et al., ). Similarly, in this study, an association between infertility and presence of C. burnetii in BTM samples was found.…”

“…Notwithstanding, several factors may have influenced this difference. It is known that the herd size is correlated with antibody positivity (Ryan et al., ; Anastacio et al., ). In this study, the mean herd size for sheep and goat herds was 56 animals (data not shown), whereas in the serologic survey the mean herd size was 6.7 animals.…”

Coxiella burnetii seroprevalence and risk factors on commercial sheep farms in The Netherlands

“…Participating dairy sheep farms had a higher median herd size compared to non-participating dairy farms. Although we do not know if herd size is related to seropositivity in Dutch dairy sheep, associations between increased herd size to seropositive results have been shown in dairy goats (Schimmer and others 2011), cattle (McCaughey and others 2010) and mainly meat-producing sheep herds (Anastacio and others 2013). The overall seroprevalence and herd prevalence might, therefore, be overestimated on dairy sheep farms included in our study.…”

“…A somewhat higher herd prevalence was found in sheep herds in Portugal (37.5 per cent) (Anastacio and others 2013) and in Sardinia (38 per cent) (Masala and others 2004), while a somewhat lower sheep herd prevalence was found in Canada (21 per cent) (Lang and others 1991). Much higher herd prevalences were reported from Northern Spain (prevalence of 75 per cent) (Ruiz-Fons and ­others 2010) and Turkey (prevalence of 83.0 per cent) (Kennerman and others 2010), although direct comparison of seroprevalence estimates in different studies is complicated due to substantial differences in study design, laboratory methods and farm characteristics for the tested flocks.…”

“…The observed sheep prevalence is comparable to a study in Germany, with a prevalence of 2.7 per cent in 1714 tested sheep from 95 flocks (Runge and others 2012), a prevalence of 3.1 per cent in Canada (Hatchette and others 2002) and of 3.1 per cent in Albania (Cekani and others 2008), while higher ­seroprevalences in sheep, around 10 per cent or above, were reported in Portugal, Cyprus, Greece, Northern Ireland, Italy, Spain and Japan (Masala and others 2004, Psaroulaki and others 2006, Garcia-Perez and others 2009, Pape and others 2009, McCaughey and others 2010, Ruiz-Fons and others 2010, Giangaspero and others 2012, Anastacio and others 2013). …”