LT-IVAX by Merck is a live virus poultry vaccine of chicken tissue culture origin, featuring a carefully selected fowl laryngotracheitis virus strain modified by passage in tissue culture. Formulated for intraocular (eye-drop) administration, this drop-dose chicken vaccine supports streamlined application across flocks. The 10 x 1000-dose pack provides scalable coverage for poultry operations seeking reliable livestock health products. A practical choice for producers sourcing a poultry vaccine format designed for flock-wide use.