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    Infectious Disease Prevention Section
    Mail Code: 1927
    PO BOX 149347 - Austin, TX 78714-9347
    1100 West 49th Street, Suite G401
    Austin, TX 78714

    Phone: (512) 776-7676
    Fax: (512) 776-7616


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Human Cases

Disease  Diseases 
  (Zoonotic Diseases, Zoonosis)

Zoonotic Diseases*

Zoonoses are diseases transmissible from animals to humans. Although there are over 150 recognized zoonoses, those of significance to Texas include:

Disease 2020*2021* 2022 20232024 20252026202720282029
Anaplasmosis 3        
Anthrax          
Babesiosis          
Brucellosis 179        
California Encephalitis1 1         
Chagas Disease 198        
Chikungunya 3         
Cysticercosis 61        
Dengue 623        
Eastern Equine Encephalitis            
Echinococcosis  2         
Ehrlichiosis 82        
Ehrlichiosis/Anaplasmosis2 
          
Hantavirus Infection            
Hantavirus Pulmonary Syndrome           
Japanese Encephalitis           
Leishmaniasis 14        
Lyme Disease 117        
Malaria 4745        
Plague           
Q-Fever 55        
Rabies in Humans            
Rickettsiosis, unspecified3  52        
Spotted Fever Rickettsiosis4 121        
St. Louis Encephalitis 3         
Taenia infection    2         
Tick-borne Relapsing Fever511        
Trichinosis           
Tularemia  1        
Typhus 526279        
West Nile Disease 12211        
     West Nile Encephalitis 10110        
     West Nile Fever 211        
Yellow Fever           
Zika Virus Disease           
*Provisional data for 2020 and 2021 as of 8/31/2021. 
NOTE: These data reflect only those cases reported to the Department of State Health Services. The actual incidence of these diseases in the state may be higher.
1California encephalitis/meningitis refers to all California serogroup viruses. California serogroup includes California encephalitis, Jamestown Canyon, Keystone, La Crosse, snowshoe hare, and trivittatus virus. 
2Denotes “Ehrlichiosis/Anaplasmosis – undetermined,” used when a case has compatible clinical criteria with laboratory evidence to support infection, but without sufficient clarity to identify the causative organism as E. chaffeensis, A. phagocytophilum, or E. ewingii.
3Rickettsiosis, unspecified replaced "dual reporting" in typhus/spotted fever cases in 2015.
4The case definition for Rocky Mountain Spotted Fever was changed to Spotted Fever Rickettsiosis in 2010 to capture cases due to other spotted fever Group Rickettsia species, such as Rickettsia parkeri. Commonly available serologic tests are unable to differentiate between spotted fever group Rickettsia species.
5Tick-borne Relapsing Fever was not a reportable condition from 2016-2020; cases were reported during these years in the reporting category of "outbreak, exotic disease, or unusual group expression of disease that may be of public health concern."
 NR = Not Reportable.                   
Human Cases of Reportable Zoonotic Diseases in Texas 2020-2029

Zoonotic Diseases*

More information about zoonotic diseases in Texas can be found in the alphabetized list below.

Choose the first letter of the disease:

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

A

B

C

D

E

F G H

L

M

N O P

Q

R

S

T

V

W

Z

*The purpose of surveillance is to try to detect where disease organisms, such as bacteria and viruses, occur in Texas. Rabies surveillance for example is basically an observation or watch for the virus that causes rabies. When an animal is exhibiting the signs of rabies, the brain may be submitted to an approved laboratory for testing. Animals that have bitten or otherwise may have exposed a person or a domestic animal to the virus should also be tested. If an animal is positive, it means that the virus was found during testing. If an animal is negative, it means that the virus was not found during testing. Similar surveillance is conducted on samples from animals for a variety of diseases. The amount of testing in the surveillance process will vary for different counties statewide. If a report indicates that an area does not have any positive test results for a particular disease, it does not necessarily mean that the disease organisms are not in that area. It just reflects the fact that either there were no samples submitted from that area or that submitted samples were negative.

Last updated September 1, 2021