I vaccinated my spring calves with modified live respiratory viruses. Their moms did not get vaccinated when open. If vaccinated calves nurse the moms, this can cause abortions. In the pas,t I could keep them apart for a couple months & all has worked out just fine. I don't have that much time anymore. What is a safe time period? Is it just till the mom dries up (a couple weeks). What if a calf nurses even if the ma is dry - is that an issue or it just if there is milk flowing? Thanks in advance for guidance in this matter. BTW I weaned them on 11/4.