Merck
Prime Pac PRRS RR has been shown to be effective for the vaccination of healthy
swine three weeks of age or older against respiratory disease caused by Porcine
Reproductive and Respiratory Syndrome (PRRS) virus and for the vaccination of
female breeding age swine against reproductive disease caused by PRRS virus.
Duration of Immunity against reproductive disease is at least 20 weeks;
duration of immunity against respiratory disease has not been established. Dosage: Aseptically rehydrate Prime Pac™ PRRS
RR with the diluent supplied. Sows and gilts: Inject a single 1 mL dose intramuscularly
(IM) 8 weeks prior to breeding. Piglets: Inject a single 1 mL dose IM at 3 weeks of
age or older. For advice on revaccination frequency, contact your veterinarian.