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Is there any materials (such as books, papers or others) about how microbes (such as the bacteria or virus) or a special kind of microbe spread from a small place to a very large area (such as the Earth)?

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  • $\begingroup$ Studies of the human microbiome suggest that gut and skin bacteria strains are localized to regions not larger than 1000 km so transport in general is limited. Look at works about ocean microbiology and aerobiology for transport through water and air. If you travel around the world and defecate, then your gut bacteria are extremely lucky. $\endgroup$ – R Stephan Jul 1 at 8:06
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Birds migrate for thousands of miles, carrying diseases on a time scale of months or less. With climate shifts, insects and animals shift their ranges on a time scale of hundreds of years or more. Bacterial spores like anthrax can be in a form that is easily blown around the whole Earth, ready to thrive wherever they touch down. Plant diseases travel with their plant hosts, and over time scales of thousands of years the plants - e.g., dandelions and conifers - can spread thousands of miles of latitude and longitude.

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