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Mosquito-Borne Diseases

Mosquitoes are vectors for diseases, which means they can transmit diseases from one human or animal to another. The mosquito population is hard to control, and they often develop resistance to insecticides, making the containment and elimination of mosquito-borne diseases difficult. According to the American Mosquito Control Association, more than one million people worldwide die from mosquito-borne diseases every year.

The increase of global travel has brought diseases once uncommon or unheard of in the United States to our shores. Outbreaks of mosquito-borne illnesses such as the Zika Virus, Chikungunya, Dengue Fever and West Nile Virus have become more commonplace in recent years. Infected mosquito vectors in Alabama have been documented carrying other serious diseases such as Eastern Equine Encephalitis, Saint Louis Encephalitis, and La Crosse Encephalitis.

Check here often for the latest information and resources on mosquito-borne illnesses in Alabama.

What's New?

For an overview on Zika Virus, statistics, and resources, visit Zika Virus.

 

 

 Cases Reported Year-To-Date*

Total of Cases by Year Reported

Mosquito-Borne Disease

2022

2021

2020

2019

2018

2017

California serogroup viruses (California encephalitis, Jamestown Canyon, Keystone, La Crosse, Snowshoe hare, Trivittatus viruses)

0

0

1

0

0

0

Chikungunya - travel related, acquired out of state

0

0

0

0

0

1

Dengue - travel related, acquired out of state

0

1

0

3

2

0

Eastern equine encephalitis

0

0

0

1

0

0

Malaria - travel related, acquired out of state

5

8

2

9

9

8

St. Louis encephalitis

0

0

0

0

0

1

West Nile

1

12

9

5

28

61

Yellow Fever

0

0

0

0^

0

0

Zika - travel related, acquired out of state

0

0

0

0

3

4

Total

6

21

12

18

42

75

Note: Counts include finalized investigations among Alabama residents as of August 5, 2022.

*As of MMWR Week 31 (week ending on August 6, 2022)

^The case definition was updated this year for this condition.

 

For questions or concerns regarding insect-borne disease in Alabama, see the Contact Us page, or email us at entomology@adph.state.al.us.





Page last updated: August 10, 2022