Good morning I gave my breed cows a guardian scours and a vira shield 6 vac. Dose was per instructions and given sub Q in front of shoulder with one vac on each side of cow. these were give about 3 weeks ago. Now one cow has large lump (size of soft ball) on one side. She acts normal. Anybody got any ideas about the cause ? Will it go away ? Is it something to worry about ?
