Which one is the major initial step in the infection process? a. Adherence b. Invasion c. Colonization d. Toxic genicity

The major initial step in the infection process is:<br /><br />a. Adherence<br /><br />Adherence refers to the ability of a pathogen to attach to the host cells. This is the first critical step in establishing an infection, as it allows the pathogen to gain entry into the host and initiate the infection process.