Final answer:
False, rubella, rubeola, and varicella-zoster can be transmitted through both respiratory droplets and, in the case of varicella-zoster, contact with infected blisters.
Step-by-step explanation:
False is the correct answer to whether Rubella, rubeola, and varicella-zoster are all acquired only via the respiratory route. While it is true that these diseases can enter the body through the respiratory system, they can also be transmitted by other means. For example, varicella-zoster virus, which causes chickenpox, can be spread through both respiratory droplets and the contact with virus-containing fluid from blisters on the skin. The diseases cause rashes and fevers, and they are systemic infections. Measles (rubeola) is the most severe of the three and can result in serious health complications. Vaccines are available for all three diseases, reducing their spread and severity.