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What is psittacosis?

Psittacosis or parrot fever is a kind of infection caused by the bacterium Chlamydia psittaci. This bacterium infects birds, especially parrots, chickens, turkeys, parakeets, pigeons, cockatiels and other flying birds. Humans can acquire the infection if they come in contact with an infected bird.

What are its main signs and symptoms?

Some of the infected people may not show any signs or symptoms; however, after the incubation period, the common symptoms which point towards psittacosis are:

Psittacosis usually causes flu-like symptoms, but it must be kept in mind that these symptoms start occurring within 9-15 days of being exposed to any of the aforementioned birds, especially in the wild.

What are the main causes?

The main, or to be specific, the only reason for anyone getting psittacosis is coming in contact with an infected or sick bird. The easiest way to find out if a bird is infected by Chlamydia psittaci is by observing the bird for these signs:

  • Shivering with discharge coming from its eyes and nose.
  • Lethargy, sleepiness.
  • Eats less or stops eating completely.
  • Discoloured (various shades of green) urine or faeces.
  • Diarrhoea.

How is it diagnosed and treated?

The diagnosis of psittacosis is not common, and the affected person needs to tell the physician about any recent contact with an infected bird. The tests performed for the diagnosis of psittacosis are normal blood tests and sputum culture.

An antibody titre test is also ordered to confirm the presence of antibodies to the bacteria. The immune system starts to produce antibodies upon detection of a foreign substance (antigen), such as bacteria, in the body. The kind of antibody and changes in its levels in the human body also confirm the diagnosis of psittacosis.

Treatment is with antibiotics - doxycycline and tetracycline are the two commonest ones used to treat psittacosis. The antibiotic course goes on for long after the fever has subsided. Recovery takes long but is complete.

  1. Medicines for Psittacosis

Medicines for Psittacosis

Medicines listed below are available for Psittacosis. Please note that you should not take any medicines without doctor consultation. Taking any medicine without doctor's consultation can cause serious problems.

Medicine NamePack SizePrice (Rs.)
Microdox LbxMicrodox Lbx Capsule55
Doxt SlDoxt Sl Capsule66
ResteclinResteclin 250 Mg Capsule14
TetlinTetlin 250 Mg Capsule0
Chloromycetin (Pfizer)Chloromycetin 125 Mg Suspension48
ChlorophenicolChlorophenicol 250 Mg Capsule9
TetrastarTetrastar 500 Mg Capsule8
Chlor SuccChlor Succ 1 Gm Injection38
DaclorDaclor 250 Mg Tablet20
EnteroEntero Injection19
Doxy 1Doxy 169
FencolFencol 125 Mg Suspension13
KemicetineKemicetine 1 Gm Injection36
Labchlor (Win Medicare)Labchlor 1 Gm Injection17
NicophenicolNicophenicol 250 Mg Capsule9
OptichlorOptichlor 0.50% Eye Drop0

Do you or anyone in your family have this disease? Please do a survey and help others


  1. National Organization for Rare Disorders [Internet], Psittacosis
  2. Center for Disease Control and Prevention [internet], Atlanta (GA): US Department of Health and Human Services; Psittacosis
  3. Department of Health & Human Services [Internet] State Government of Victoria, Australia; Psittacosis (ornithosis, parrot fever)
  4. Ojeda Rodriguez JA, Brady MF. Pneumonia, Psittacosis. [Updated 2018 Oct 27]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2019 Jan-.
  5. Better health channel. Department of Health and Human Services [internet]. State government of Victoria; Psittacosis - parrot fever
  6. Yannick Vande Weygaerde et al. An unusual presentation of a case of human psittacosis . Respir Med Case Rep. 2018; 23: 138–142. PMID: 29719801
  7. Hogerwerf L et al. Chlamydia psittaci (psittacosis) as a cause of community-acquired pneumonia: a systematic review and meta-analysis. Epidemiol Infect. 2017 Nov;145(15):3096-3105. PMID: 28946931
  8. Rybarczyk J et al. Human psittacosis: a review with emphasis on surveillance in Belgium. Acta Clin Belg. 2019 Mar 18:1-7. PMID: 30882289
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