Skip directly to search Skip directly to A to Z list Skip directly to navigation Skip directly to site content Skip directly to page options
CDC Home
mom taking childs temperature

Symptoms and Illnesses

Human parainfluenza viruses (HPIVs) commonly cause upper and lower respiratory illnesses. After you get infected, it takes about 2 to 7 days before you develop symptoms.

Symptoms of upper respiratory illness may include—

  • fever,
  • runny nose, and
  • cough.

HPIVs can cause severe lower respiratory illness, such as—

  • croup or laryngotracheobronchitis (swelling around the vocal chords and windpipe),
  • bronchitis (swelling of the main air passages that connect the windpipe to the lungs),
  • bronchiolitis (swelling in the smallest air passages in the lungs), and
  • pneumonia.

Young children are more likely to have severe illness, but older adults and people with weakened immune systems are also at risk.

Other symptoms of HPIV illness may include—

  • ear infection,
  • irritability, and
  • decreased appetite.

Top of Page

Images and logos on this website which are trademarked/copyrighted or used with permission of the trademark/copyright or logo holder are not in the public domain. These images and logos have been licensed for or used with permission in the materials provided on this website. The materials in the form presented on this website may be used without seeking further permission. Any other use of trademarked/copyrighted images or logos requires permission from the trademark/copyright holder...more

External Web Site Policy This graphic notice means that you are leaving an HHS Web site. For more information, please see the Exit Notification and Disclaimer policy.

Contact Us:
  • Centers for Disease Control and Prevention
    1600 Clifton Rd
    Atlanta, GA 30333
  • 800-CDC-INFO
    TTY: (888) 232-6348
    Contact CDC-INFO The U.S. Government's Official Web PortalDepartment of Health and Human Services
Centers for Disease Control and Prevention   1600 Clifton Road Atlanta, GA 30329-4027, USA
800-CDC-INFO (800-232-4636) TTY: (888) 232-6348 - Contact CDC–INFO
A-Z Index
  1. A
  2. B
  3. C
  4. D
  5. E
  6. F
  7. G
  8. H
  9. I
  10. J
  11. K
  12. L
  13. M
  14. N
  15. O
  16. P
  17. Q
  18. R
  19. S
  20. T
  21. U
  22. V
  23. W
  24. X
  25. Y
  26. Z
  27. #