Variation among strains of Borrelia burgdorferi in host tissue abundance and lifetime transmission determine the population strain structure in nature. - Zinck, Christopher B.; Raveendram Thampy, Prasobh; Uhlemann, Eva-Maria E.; Adam, Hesham; Wachter, Jenny; Suchan, Danae; Cameron, Andrew D. S.; Rego, Ryan O. M.; Brisson, Dustin; Bouchard, Catherine; Ogden, Nicholas H.; Voordouw, Maarten J. (PLoS Pathogens, 2023)