What mechanism allows known pathogens to classify as emerging due to geographic expansion into naive populations?

Answer

Changes in the environment allowing vectors like mosquitoes or ticks to survive in new climates.

Geographic expansion often occurs due to changes in the environment, such as increased temperatures or altered rainfall patterns, which expand the habitat range for disease vectors.

What mechanism allows known pathogens to classify as emerging due to geographic expansion into naive populations?
diseasepathogenInfectionemergence