Direct transmission can occur through several mechanisms:
Physical Contact: This includes touching, biting, kissing, and sexual contact, where the infectious agent is transferred through skin or mucous membranes. Droplet Spread: When an infected person coughs, sneezes, or talks, respiratory droplets containing the pathogen can be inhaled by a nearby person. Vertical Transmission: This involves the transfer of an infectious agent from a mother to her baby during pregnancy, childbirth, or breastfeeding.