True about epidemiology of leprosy -

Epidemiology of Leprosy Description: Chronic infectious disease caused by Mycobacterium leprae and affecting mainly peripheral nerves Leprosy is a disease of 'high Infectivity but low pathogenicity' Attack rate of Leprosy among house hold contacts : 4.4-12% Youngest case of Leprosy in India: 2 1/2 month infant Leprosy is often known as a "Social disease" Is probably the oldest disease known to mankind Mode of transmission Droplet infection (MC) Contact transmission (Direct skin to skin or indirect with soil/fomites) Breast milk from lepromatous mothers Transplacental Insect vectors Tattoing needles Ref: Park 25th edition Pgno : 335