<prompt> True about mycobacterium leprae ?Transmitted by droplet infectionPhenolic glycolipid PGL is virulence factorGeneration time 12-13 daysAll are true  <response>: Ans. is d i.e., All are true Generation time of M. leprae is 12-13 days.Phenolic glycolipid- I PGL-1 acts as a virulence factor.Modes of transmission are :?Droplet infection : Most common mode.Contact transmission : Either direct skin to skin or indirect contact with contaminated soil or fomite.Other : Breast milk from lepromatous leprosy, by insect vector, by tattooing needles. 