Group A Strep (GAS) Data
Group A Streptococcus Incidence Rate Maps for Texas by Year
2019 2018 2016 2015 2014 2013 2012 2011 2010 2009
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Reported Group A Streptococcus Invasive Disease Cases and Incidence Ratesa in Texas, 2012-2021
| Year | Case Count | IR |
|---|---|---|
| 2021 | NR | NR |
| 2020 | 545 | 1.8 |
| 2019 | 971 | 3.3 |
| 2018 | 1,023 | 3.5 |
| 2017 | 851 | 3.0 |
| 2016 | 706 | 2.5 |
| 2015 | 729 | 2.6 |
| 2014 | 601 | 2.2 |
| 2013 | 419 | 1.6 |
| 2012 | 333 | 1.3 |
aIncidence rates (IR) are calculated per 100,000 population. Population data are projected census data from Texas Demographic Center’s Texas Population Projections Program; 2021, 2020 and 2019 population projections were updated March 2022, and 2018 & earlier population projections were from the prior version.
Data Source: Texas NEDSS Finalized Data File, 2012-2021, Texas Notifiable Conditions.
Reported Group A Streptococcus, Invasive Cases and Incidence Ratesa by Age Groups in Texas, Years 2012-2019
| Age | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (Years) | Case Count | IR | Case Count | IR | Case Count | IR | Case Count | IR | Case Count | IR | Case Count | IR | Case Count | IR | Case Count | IR |
| <1 | 7 | 1.7 | 6 | 1.4 | 13 | 3.2 | 10 | 2.4 | 13 | 3.1 | 4 | 0.9 | 15 | 3.5 | 11 | - |
| 1-4 | 22 | 1.4 | 27 | 1.7 | 31 | 2 | 33 | 2.1 | 21 | 1.3 | 20 | 1.2 | 37 | 2.2 | 21 | 1.3 |
| 5-9 | 11 | 0.6 | 10 | 0.5 | 30 | 1.5 | 24 | 1.2 | 18 | 0.9 | 27 | 1.3 | 29 | 1.4 | 33 | 1.6 |
| 10-14 | 6 | 0.3 | 4 | 0.2 | 9 | 0.4 | 13 | 0.6 | 13 | 0.6 | 11 | 0.5 | 11 | 0.5 | 13 | - |
| 15-19 | 3 | 0.2 | 4 | 0.2 | 15 | 0.8 | 9 | 0.4 | 7 | 0.3 | 9 | 0.4 | 12 | 0.5 | 15 | - |
| 20-29 | 27 | 0.7 | 31 | 0.8 | 31 | 0.8 | 41 | 1 | 52 | 1.3 | 53 | 1.3 | 56 | 1.3 | 66 | 1.5 |
| 30-39 | 36 | 0.9 | 42 | 1 | 56 | 1.5 | 58 | 1.5 | 56 | 1.4 | 91 | 2.3 | 93 | 2.3 | 75 | 1.8 |
| 40-49 | 38 | 1 | 42 | 1.1 | 64 | 1.8 | 71 | 2 | 71 | 1.9 | 101 | 2.7 | 124 | 3.3 | 98 | 2.6 |
| 50-59 | 58 | 1.8 | 84 | 2.5 | 106 | 3.1 | 135 | 3.9 | 134 | 3.8 | 162 | 4.6 | 181 | 5.1 | 173 | 5.0 |
| 60+ | 125 | 3.2 | 169 | 4.1 | 246 | 5.5 | 335 | 7.2 | 321 | 6.6 | 373 | 7.4 | 464 | 8.8 | 466 | 8.8 |
| Unknown | 0 | - | 0 | - | 0 | - | 0 | - | 0 | - | 0 | - | 1 | - | 0 | - |
| Total | 333 | 1.3 | 419 | 1.6 | 601 | 2.2 | 729 | 2.6 | 706 | 2.5 | 851 | 3.0 | 1023 | 3.5 | 971 | 3.3 |
aIncidence rates (IR) are calculated per 100,000 population. Population data are projected population from Texas Demographic center’s Texas Populations Projections Program; 2019 population projections were updated July 18, 2019, and 2018 population projections were from the prior version. Projected populations were used for 2012-2019.
Note: Per Emerging and Acute Infectious Disease Unit Data Suppression policy, beginning with data published after September 2021, conditions with statewide case counts of 1-4 are not provided (-). Rates are not provided (-) when the Relative Standard Error exceeds 25% (n<16).
Streptococcus Group A Cases and Incidence Ratesa for the Most Populous Texas Counties, 2018-2019
| County | 2018 Cases | 2018 IR | 2019 Cases | 2019 IR |
|---|---|---|---|---|
| BEXAR | 97 | 4.9 | 73 | 3.6 |
| BRAZORIA | 8 | - | 5 | - |
| CAMERON | 7 | - | 9 | - |
| COLLIN | 31 | 2.9 | 20 | 2.0 |
| DALLAS | 98 | 3.8 | 99 | 3.7 |
| DENTON | 22 | 2.5 | 24 | 2.8 |
| EL PASO | 37 | 4.0 | 33 | 3.8 |
| FORT BEND | 10 | - | 6 | - |
| HARRIS | 108 | 2.3 | 110 | 2.3 |
| HIDALGO | 33 | 3.5 | 33 | 3.8 |
| MONTGOMERY | 10 | 1.6 | 17 | 2.9 |
| NUECES | 23 | 6.2 | 24 | 6.3 |
| TARRANT | 88 | 4.3 | 100 | 4.7 |
| TRAVIS | 78 | 6.4 | 56 | 4.4 |
| WILLIAMSON | 14 | - | 20 | 3.5 |
| STATEWIDE TOTALS | 1,023 | 3.5 | 971 | 3.3 |
aIncidence rates (IR) are calculated per 100,000 population. Population data are projected population from Texas Demographic Center’s Texas Populations Projections Program; 2019 population projections were updated July 18, 2019, and 2018 population projections were from the prior version.
Note: Per Emerging and Acute Infectious Disease Unit Data Suppression policy, beginning with data published after September 2021, rates are not provided (-) when the Relative Standard Error exceeds 25% (n <16).
Data Source: Texas NEDSS Finalized Data File, 2018 & 2019, Texas Notifiable Conditions.
For more data regarding this condition, please view our Infectious Disease Annual Reports or submit a Data Request.