Facebook post by University of Helsinki

No specific environment or temperature favourable to all of the most common pathogens borne by ticks was found in a study. Depending on the species, bacteria found inside ticks can either compete with each other or promote each other's distribution.
Bacteria spread by ticks affected by humidity and mutual competition | University of Helsinki helsinki.fi

Different bacterial species thrive in different environmental conditions. Bacteria inside ticks can also compete with each other.