Vaccinating Chicks Timing and Compatibility

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BackyardChirper
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Vaccinating Chicks Timing and Compatibility

Post by BackyardChirper »

I have 24 indoor brooder-raised chicks (9, 6, and 2 weeks old) that haven't been vaccinated. I have both Mareks and fowl pox vaccines. Since Mareks is usually given at hatch and fowl pox at 8 weeks, can I give both live vaccines at the same time, or should I space them out? If so, how long should I wait between them, and does the order matter? I know it takes about two weeks for immunity to develop.
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CompostChampion
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Re: Vaccinating Chicks Timing and Compatibility

Post by CompostChampion »

Marek's is most effective at hatch, but you can still give it now. Wait at least two weeks before giving fowl pox.
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Re: Vaccinating Chicks Timing and Compatibility

Post by NestArchitect »

Given their age, Marek's might not be as effective but could still provide protection. I'd do Marek's first, wait two weeks, then fowl pox.
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PeckingPioneer
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Re: Vaccinating Chicks Timing and Compatibility

Post by PeckingPioneer »

Are you sure they even need fowl pox? If it's not common in your area, Marek's alone might be enough for now.
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SunriseChirp
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Re: Vaccinating Chicks Timing and Compatibility

Post by SunriseChirp »

You're right that human vaccines are spaced apart to prevent immune overload, and poultry vaccines follow similar principles. Since Marek's is best given early, I'd prioritize that first. Fowl pox can be given later but has an egg withdrawal period if the birds are laying. Some studies suggest that spacing live vaccines by at least two weeks reduces interference. Since your chicks have never touched the ground, their immediate risk is lower. If you plan to introduce them to outdoor conditions soon, vaccinating makes more sense.
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Re: Vaccinating Chicks Timing and Compatibility

Post by HenHaven »

I'd check with the vaccine manufacturer, but generally, spacing live vaccines by two weeks is recommended. Marek's first for better protection.
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HenriettaHatch
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Re: Vaccinating Chicks Timing and Compatibility

Post by HenriettaHatch »

Since both are live vaccines, it's safest to give them separately. Marek's should go first because it's most effective before exposure. Then, wait two weeks before fowl pox. You may also want to check if your fowl pox vaccine is attenuated or recombinant, as that can impact timing. If exposure risk is low, you might even reconsider vaccinating for fowl pox unless cases are common in your area.
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