GET A HEAD START WITH EARLY IMMUNITY. NEWXXITEK™ HVT+ND is a vectored vaccine that has been shown to aid in the prevention of Marek's disease and Newcastle disease. Clinical protection was detected in 70% of the birds tested at 14 days post-vaccination1 and in 100% of birds tested at 28 days2,3. REFERENCES 1 Data on file. 2 Data on file. 3 Data on file. NEWXXITEK™ is a trademark of Merial. © 2017 Merial Select, Inc. Gainesville, Georgia. All rights reserved. Merial is now part of Boehringer Ingelheim.