Chlamydia

What color does Chlamydiaceae appear on a gram stain?
They don’t stain, they are intracelluar organisms and do not have a peptidoglycan layer
What are the 2 forms Chlamydiaceae exists in during an infection?
Elementary and Reticulate bodies
What form of Chlamydiaceae is it in when its replicating?
Reticulate bodies
What form of Chlamydiaceae uses host energy?
Reticulate body
What form of Chlamydiaceae invades host cells?
Elementary body
What does Chlamydiaceae have for its antigenic structure?
LPS
What disease does Chlamydophila psittaci cause?
Parrot Fever
How is Chlamydophila pneumoniae transmitted?
Respiratory Droplets
What bug causes atypical pneumoniae?
Chlamydophila pneumoniae and Mycoplasma pneumoniae both cause it.
What is the leading cause of blindness worldwide?
Trachoma (caused by Chlamydia trachomatis)
Serotype of trachoma causeing bacteria?
(A, B1, B2, C)
Serotype of Inclusion conjictivitis?
D-K
Serotype of Non-Gonococcal Urethritis (NGU)?
D-K
Serotype of Lymphogranuloma venerum (LGV)
L1-L3
When first exposed to trachoma what do you usually get?
acute conjuctivitis (usually resolves). Repeated infections can lead to blindess from the cornea being scratch.
BUZZWORD: Copious mucopurulent eye discharge
Adult Inclusion Conjuctivits
What is LGV usually characterized by?
transient papules on external genitalia and swollen peri-rectal lymph nodes (looks like direct hernia)
What do you have in NGU that you don’t have in LGV?
mucoid discharge from the peenus or cervix.
Categories: Microbiology