Answer: Doxycycline
Explanation:
Psittacosis is a disease which is caused by Chlamydia psittaci which is an obligate intracellular  gram negative organism.
The people who are pet shop employee, veterinarians susceptible to infections.
The patients suffering from this diseases have high fever, severe headache, cough et cetera. These people can also have proteinuria.
This disease is treated by the antibiotics doxycyclin.
