Duinhof, T F <br/><br/>
Detection of PRRSV circulation in herds without clinical signs of PRRS: comparison of five age groups to assess the preferred age group and sample size.  [electronic resource] 

 -  Veterinary microbiology  May 2011 
 - 180-4 p.  digital 
<br/><br/> Publication Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't 
<br/><br/><label>ISSN: </label>1873-2542 
<br/><br/><label>Standard No.: </label>10.1016/j.vetmic.2011.01.001  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Animals<br/>Antibodies, Viral--blood<br/>Cross-Sectional Studies<br/>Enzyme-Linked Immunosorbent Assay<br/>Female<br/>Logistic Models<br/>Male<br/>Porcine Reproductive and Respiratory Syndrome--diagnosis<br/>Porcine respiratory and reproductive syndrome virus--isolation & purification<br/>Prevalence<br/>Sample Size<br/>Seroepidemiologic Studies<br/>Swine--virology