European Foulbrood larvae susceptible window?

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Multiple Choice

European Foulbrood larvae susceptible window?

Explanation:
European foulbrood primarily affects very young honey bee larvae, so the window of susceptibility is the earliest stage after hatching. In the first 48 hours, larvae are being fed brood food by nurse bees, and this environment is conducive for Melissococcus plutonius to establish and multiply in the gut. As development proceeds beyond about two days, the larva’s gut conditions change and its defenses improve, making infection much harder to establish. That combination of timing and gut environment is why the critical period is within the first 48 hours after hatching.

European foulbrood primarily affects very young honey bee larvae, so the window of susceptibility is the earliest stage after hatching. In the first 48 hours, larvae are being fed brood food by nurse bees, and this environment is conducive for Melissococcus plutonius to establish and multiply in the gut. As development proceeds beyond about two days, the larva’s gut conditions change and its defenses improve, making infection much harder to establish. That combination of timing and gut environment is why the critical period is within the first 48 hours after hatching.

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