Final answer:
Legionella and tetanus are non-communicable infectious diseases caused by specific bacteria. They cannot be passed from person to person and are typically transmitted through contact with contaminated sources, such as a skin wound or contaminated water.
Step-by-step explanation:
Legionella and tetanus are examples of non-communicable infectious diseases because they cannot be passed from one person to another. Tetanus is caused by the bacterium Clostridium tetani and is typically transmitted through contact with a skin wound. Legionnaires disease is caused by Legionella pneumophila and is contracted through contact with contaminated water. Once infected, individuals cannot transmit the pathogens to others.