what is mareks vaccine
Marek's Vaccine 1000 doses. 1  Mareks vaccine is recommended for the vaccination of healthy one-day-old chicks only, to aid in the prevention of the signs and lesions of Mareks disease. Give subcutaneously only (injected into the bird). For vaccination, an automatic syringe with 22- to 20-gauge needles, 3/8-inch to 1/2-inch in length, is recommended.