Final answer:
Legionella and tetanus are non-communicable infectious diseases that are not spread from person to person. Tetanus is transmitted through contact with a skin wound, while Legionnaires disease is contracted through contact with contaminated water.
Step-by-step explanation:
Legionella and tetanus are both non-communicable infectious diseases because they are not spread 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 the bacterium Legionella pneumophila, which is usually contracted through contact with contaminated water. Once infected, individuals cannot pass the pathogens to other people.