How disease spreads

Vectors and disease spread in humans and animals

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The left picture shows a young, tan calf laying down with flies on its face. The right picture shows a tick on the end of a blade of grass.

As we move into summer and the weather gets warmer, we tend to see an increase in vector-borne diseases (VBD). Vectors are insects, rodents, birds, or other animals that can carry disease pathogens. The most common vectors are insects that suck blood, such as mosquitoes and ticks. VBDs occur in both animals and humans. Every … Read more

How Disease Spreads

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Red calves eat forage at a feed bunk.

Diseases can be spread in a variety of ways – through humans, the environment, and other animals. Knowing how diseases spread can help you take actions to protect your animals.  Routes of disease spread are listed and discussed below.   Aerosol transmission    Aerosol spread happens when droplets are spread through the air by coughing or sneezing. … Read more