Final answer:
Varicella, or chickenpox, is transferred mainly via airborne transmission. Direct contact with the infectious lesions or inhalation of material from the lesions can spread the virus.
Step-by-step explanation:
The Medical Assistant (MA) should recognize that varicella, also known as chickenpox, is transferred primarily through airborne transmission. This can occur by direct contact or inhalation of material from the lesions of an infected person. Additionally, the varicella-zoster virus the causative agent for chickenpox and shingles can be transmitted by contact with body fluids. However unlike diseases like malaria or West Nile virus, which are spread by insects, the varicella transmission does not occur through vectors such as mosquitoes, ticks or flies.