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Human Cases 2000-2009

Zoonotic Diseases*

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

Human Cases of Reportable Zoonotic Diseases in Texas 2000-2009 
Disease 2000  2001  2002  2003  2004 2005  2006  2007  2008  2009
Anaplasmosis NR  NR  NR  NR   NR  NR NR NR  1 2
Anthrax  0 0
Babesiosis  NR  NR  NR  NR  NR  NR  NR  NR  NR  NR
Brucellosis  22 43  37  32  37  17  18  25 9 12
California Encephalitis1 2
Chagas Disease  NR NR  NR  NR  NR  NR  NR  NR  NR  NR 
Chikungunya  NR  NR  NR  NR  NR  NR  NR  NR  NR  NR 
Cysticercosis  NR  NR  NR  NR  NR  NR  NR 
Dengue  9 9 3 32 8 32 22    14 
Eastern Equine Encephalitis
Echinococcosis NR  NR  NR  NR  NR  NR  NR  NR  NR  NR 
Ehrlichiosis  0 0 8 9 4 8 7 32 27 5
Ehrlichiosis/Anaplasmosis2 NR  NR  NR  NR  NR  NR  NR  NR  0
Hantavirus Infection
Hantavirus Pulmonary Syndrome  2 1 5 1   4 2  
Japanese Encephalitis 
Leishmaniasis NR  NR  NR  NR  NR  NR  NR  9
Lyme Disease 77 75 133 85 99 69 29 87 153  276
Malaria 46 77 70 125 111 130 106 130 87 87
Plague 0 0 0 0 0 0 1 0 0 0
Q-Fever  NR NR 6 4 5  6 13 11  24 13
Rabies in Humans 0 0 0 0 3 0 1 0 0 1
Rickettsiosis, unspecified3  NR NR NR NR NR NR NR NR NR NR
Rocky Mountain Spotted Fever4 6 0 13  14 20 30 40 49 62 36
St Louis Encephalitis 2 5 18 18 4 0 1 0 0 4
Taenia infection NR NR  NR  NR  NR  NR  NR  0 0 2
Tick-borne Relapsing Fever5
Trichinosis 0 0 0 0 0 0 0 0 0 0
Tularemia NR NR  3 2 1 1 0 1 0 0
Typhus 53 22 53 30 66 100 146 169 157 191
West Nile Disease 0 202 720 176 195 354 260 64 115
     West Nile Encephalitis 0 0 202  431 119 128 233 170 40 93
     West Nile Fever NR NR  NR  289 57 67 121  90 24 22
Yellow Fever 0 0 1 0 0 0 0 0 0 0
Zika Virus Disease NR NR  NR NR  NR  NR  NR  NR  NR  NR 

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" of flea-borne 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.