Pfizer Temperature Sensitive Vaccine-2 CTN/25 X 1-dose is a modified live intranasal vaccine to fight against infectious Bovine Rhinotracheitis (red nose) and Parainfluenza in beef and dairy cattle. Temperature Sensitive means that the virus will grow only in the cooler temperature of the respiratory tract and thus they cannot invade fetal tissues to cause abortions due to the TSV-2 virus being genetically altered. The intranasal administration puts the virus in the upper respiratory tract where the disease starts. Comes in a carton of 25 single 1 doses. CAUTION: 21-day slaughter withdrawal.