Some strains of the bacteria Escherichia coli readily cause bacteria UTI's while other do not. The fimbriae of the pathogen strains differs from that of the non-UTI causing strains. What must the fimbriae be able to do in the pathogenic strains and why is this important? What is pelvic inflammatory disease? List two pathogens commonly associated with this condition and explain why these pathogens are able to infect a woman for the long period of time needed to establish PID..