* Herd Immunity: This is a concept in epidemiology where a large portion of a population is immune to a disease, making it difficult for the disease to spread. This can happen through vaccination or natural infection.
* Herd Behavior: This is a term used in animal behavior to describe how animals in a group behave collectively. It can involve things like following a leader, migrating together, or reacting to threats as a unit.
* Disease Outbreak in a Herd: This refers to a situation where a disease affects multiple animals within a herd. This could be due to an infectious agent, environmental factors, or other causes.
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