All of the following might lead to a disease caused by an opportunistic pathogen except

An encounter with an affected animal

Explanation:

Note:

hormonal changes, changes in diet and immune suppression might lead to a disease caused by an opportunistic pathogen.

Bonus:

An opportunistic pathogen can be bacteria, viruses, fungi, or protozoa that take advantage of an rare opportunity to infect it's due to weakened immune system, a disruption in the host gut microbiota/integumentary barriers.

An opportunistic pathogen can not cause disease Where there is normal immune system in the host

producers: apple trees, potatoes, carrots, grains, acorns, cabbage, grass, corn, lettuce

consumers: deer, mice, rabbits, chickens, squirrels, horses, worms, cows

predators: eagles, frogs, wolves, owls

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