Skip directly to local search Skip directly to A to Z list Skip directly to navigation Skip directly to site content Skip directly to page options
CDC Home

Japanese Encephalitis Photos


WARNING: Some of these photos might be unsuitable for children. Viewing discretion is advised.


Photos of the Disease

WNV is a member of the Japanese encephalitis virus antigenic complex, which includes several medically important viruses associated with human encephalitis: Japanese encephalitis, St. Louis encephalitis, Murray Valley encephalitis, and Kunjin, an Australian subtype of WNV.

A few samples from the Public Health Image Library
Photomicrograph of Haemophilus influenzae using immunofluorescence.

Photo ID# 12793
Using a histochemical technique in processing this tissue specimen, this image reveals the presence of the West Nile virus.

Blood agar plate culture of Haemophilus influenzae.

Photo ID# 12792
This photomicrograph revealed some of the histopathologic changes in this specimen of equine brain tissue revealing the perivascular inflammationassociated with this West Nile virus (WNV) infection.

Photomicrograph of Haemophilus influenzae as seen using a Gram stain technique.

Photo ID# 12549
This image depicts the “egg raft” deposited by a female Culex quinquefasciatus mosquito. The female C. quinquefasciatus mosquito is known as one of the many arthropodal vectors responsible for spreading the West Nile virus to human beings through their bite when obtaining a blood meal.

Top of Page

Photo of a Mosquito that Spreads this Disease

The virus causing Japanese encephalitis is transmitted by mosquitoes belonging to the Culex tritaeniorhynchus and Culex vishnui groups, which breed particularly in flooded rice fields. The virus circulates in ardeid birds (herons and egrets). Pigs are amplifying hosts, in that the virus reproduces in pigs and infects mosquitoes that take blood meals, but does not cause disease. The virus tends to spill over into human populations when infected mosquito populations build up explosively and the human biting rate increases (these culicines are normally zoophilic, i.e. they prefer to take blood meals from animals). Courtesy of WHO

Culex mosquito laying eggs

From the Division of Vector-borne Infectious Diseases
Photo of Culex mosquito laying eggs.

More mosquito photos can be found on the Public Health Image Library site.

Top of Page

Images of People Affected by the Disease

None available.


Additional Images and Regulations

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. #