The Marek's Disease vaccine has just become available at a hatchery close to my home
Since I had a difficult time locating the vaccine before, I did not vaccinate but instead bred for resistance, however I was thinking about buying the vaccine as a precaution since I plan to hatch chicks more frequently this year. I understand you have to keep it cold but my question is can the vaccine be reused or is it one-time use only?

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