Afebrile Pneumonia Syndrome Differential Diagnoses
- Author: Robert W Tolan Jr, MD; Chief Editor: Michael R Bye, MD more...
Diagnostic Considerations
Some organisms acquired perinatally may not cause illness until later in infancy, including Chlamydophila pneumoniae,Ureaplasma urealyticum,Mycoplasma hominis, cytomegalovirus, and Pneumocystis jiroveci. Infants infected with these organisms present between age 4-11 weeks with an afebrile pneumonia characterized by a staccato cough, tachypnea, and, occasionally, hypoxia.
Infants with bacterial pneumonia often are febrile, but those with viral pneumonia or pneumonia caused by atypical organisms may have a low-grade fever or may be afebrile. The child's caretakers may complain that the child is wheezing or has noisy breathing.
Differentials
- Atypical Mycobacterial Infection
- Chlamydial Infections
- Congenital Pneumonia
- Cytomegalovirus Infection
- Hypersensitivity Pneumonitis
- Mycoplasma Infections
- Parainfluenza Virus Infections
- Pneumonia
- Respiratory Syncytial Virus Infection
- Rhinovirus Infection
Brewster DR, De Silva LM, Henry RL. Chlamydia trachomatis and respiratory disease in infants. Med J Aust. Oct 3 1981;2(7):328-30. [Medline].
Wolf DG, Greenberg D, Shemer-Avni Y, Givon-Lavi N, Bar-Ziv J, Dagan R. Association of human metapneumovirus with radiologically diagnosed community-acquired alveolar pneumonia in young children. J Pediatr. Jan 2010;156(1):115-20. [Medline].
Brasfield DM, Stagno S, Whitley RJ, et al. Infant pneumonitis associated with cytomegalovirus, Chlamydia, Pneumocystis, and Ureaplasma: follow-up. Pediatrics. Jan 1987;79(1):76-83. [Medline].
Fasoli L, Paldanius M, Don M, et al. Simkania negevensis in community-acquired pneumonia in Italian children. Scand J Infect Dis. 2008;40(3):269-72. [Medline].
Chen CJ, Wu KG, Tang RB, Yuan HC, Soong WJ, Hwang BT. Characteristics of Chlamydia trachomatis infection in hospitalized infants with lower respiratory tract infection. J Microbiol Immunol Infect. Jun 2007;40(3):255-9. [Medline].
Beem MO, Saxon E, Tipple MA. Treatment of chlamydial pneumonia of infancy. Pediatrics. Feb 1979;63(2):198-203. [Medline].
Radkowski MA, Kranzler JK, Beem MO, et al. Chlamydia pneumonia in infants: radiography in 125 cases. AJR Am J Roentgenol. Oct 1981;137(4):703-6. [Medline].
Geis T, Schilling S, Segerer H. [A Young Infant with Afebrile Pneumonia Caused by Chlamydia Trachomatis]. Klin Padiatr. Aug 3 2006;[Medline].
Abzug MJ, Beam AC, Gyorkos EA, Levin MJ. Viral pneumonia in the first month of life. Pediatr Infect Dis J. Dec 1990;9(12):881-5. [Medline].
FDA Approves Roche (RHHBY)'s Valcyte(R) to Prevent Cytomegalovirus Disease in Pediatric Patients Who Receive Heart or Kidney Transplants. Available at http://www.biospace.com/news_story.aspx?NewsEntityId=154407. Accessed November 12, 2010.

