Question

Why is Legionella not effective at spreading itself?

A) Legionella lacks virulence factors.
B) Legionella cannot survive outside of water.
C) Legionella cannot be transmitted through direct contact.
D) Legionella is not adapted to human hosts.

Answer 1

Legionella pneumophila is not effective at spreading itself due to its inability to survive outside of water, being poorly adapted to human hosts, and its inability to be transmitted through direct contact.

Step-by-step explanation:

Legionella pneumophila, the bacterium responsible for Legionnaires disease, is not effective at spreading itself due to several reasons. Firstly, Legionella cannot survive outside of water, which limits its ability to spread to different environments. Secondly, Legionella is not adapted to human hosts, meaning it cannot effectively establish infection and proliferate within the human body. Finally, Legionella cannot be transmitted through direct contact, further limiting its mode of spread.