Glenn Selk, Oklahoma State University Emeritus Extension Animal Scientist — Adapted from:“Can storage of vaccine affect its efficacy?”, Gant Mourer, Cow Calf Corner Newsletter, Oct. 30, 2017 Much has been written recently about the need for a new human vaccine for the coronavirus. Vaccines for several costly diseases of cattle have been in use for some time.Cattle owners need to remind themselves that the vaccines that they buy will be at their utmost effectiveness when first purchased. A vaccine can cost over $3.00 per dose, and if not stored properly that vaccine can be rendered ineffective. Producers cannot afford to…

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