SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/chick-marek-vaccine

How do chick owners protect against Marek's disease?

A vaccine, given at hatch, because there is no treatment.

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  1. Antibiotics once a month
  2. A vaccine given at hatch ✔
  3. Extra protein in the feed

Why: Marek's disease spreads through dust and feather dander from infected birds. The vaccine is given at hatch or even before, inside the egg, so ask for vaccinated chicks.

Huh, didn't know that: One typical sign of Marek's leg paralysis is one leg forward and the other back.

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Why are chicken coops built with two doors? If they had four doors, they would be chicken sedans.
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References

Answer: A vaccine given at hatch. Marek's disease spreads through dust and feather dander from infected birds. The vaccine is given at hatch or even before, inside the egg, so ask for vaccinated chicks.

  1. Marek's Disease in Poultry, Merck Veterinary Manual www.merckvetmanual.com/poultry/neoplasms-in-poultry/marek-s-disease-in-poultry
    Although no treatment is available, current vaccines are highly protective.
    Checked 2026-10-11.
  2. Marek's Disease in Poultry, Merck Veterinary Manual www.merckvetmanual.com/poultry/neoplasms-in-poultry/marek-s-disease-in-poultry
    Vaccines are administered at hatch or in ovo to embryos at the 18th day of incubation.
    Checked 2026-10-11.

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