Data

Copy and paste the text below. It is read-only. Select All

PRRS Order: Nidovirales Family: Arteriviridae Genus: Arterivirus Single Stranded (+) RNA Enveloped Icosahedral Replicates in the cytoplasm Host Range Pigs of all ages Transmission Direct contact Aerosol Indirect contact Vehicles, fomites Virus is shed in nasal secretions, saliva, urine, and feces Grower pigs may shed the virus for up to 2 months Adult pigs shed virus for up to 2 weeks Pathogenesis Virus replicates in the macrophages of the lungs thus predisposing the animal to secondary respiratory infections such as pneumonia Virus also spreads to and replicates in the thymus, liver, spleen, lymph nodes, and intestine If pregnant gilt or sow infected after 70 days gestation the virus will cross placenta and infect fetuses Porcine Parvovirus infects <70 days gestatio Respiratory Form Clinical Signs Respiratory Form Lack of appetite Labored breathing Sneezing Transient fever Cyanosis of the ears Pneumonia Reproductive Form Clinical Signs Agalactia Stillbirths Mummified fetuses Weak born piglets Suckling piglets produces a characteristic thumping respiratory sound Diagnosis Clinical Signs ELISA Virus Isolation Treatment Vaccines available Antibiotics for secondary infections