Final answer:
Yes, doxycycline would be an appropriate antibiotic for pneumonia caused by Chlamydia pneumoniae.
Step-by-step explanation:
If a patient's pneumonia is known to be caused by an atypical pathogen such as Chlamydia pneumoniae, doxycycline would be an appropriate antibiotic.
Chlamydial pneumonias are caused by bacteria, and these bacteria can be classified into three species: Chlamydophila pneumoniae (formerly known as Chlamydia pneumoniae), Chlamydophila psittaci (formerly known as Chlamydia psittaci), and Chlamydia trachomatis. Doxycycline is an antibiotic that is effective against these bacteria, including Chlamydia pneumoniae.
Therefore, the answer to the question is Yes, doxycycline would be an appropriate antibiotic for pneumonia caused by Chlamydia pneumoniae.