Volume 28, Number 9—September 2022
CME ACTIVITY - Research
Increasing Incidence of Invasive Group A Streptococcus Disease, Idaho, USA, 2008–2019
Eileen M. Dunne, Scott Hutton, Erin Peterson, Anna J. Blackstock, Christine G. Hahn, Kathryn Turner, and Kris K. Carter
Table 4
Underlying conditions and risk factors of patients with invasive group A Streptococcus disease, overall and by 6-year periods, Idaho, 2008–2019
| Risk factor |
No. (%) patients |
||
|---|---|---|---|
| Overall, N = 432* |
2008–2013, n = 69* |
2014–2019, n = 363* |
|
| Any underlying condition | |||
| No | 113 (26.2) | 17 (24.6) | 96 (26.5) |
| Yes |
319 (73.8) |
52 (75.4) |
267 (73.6) |
| Condition | |||
| Diabetes | 178 (41.2) | 30 (43.5) | 148 (40.8) |
| Heart disease: congestive heart failure or coronary artery disease | 116 (26.9) | 16 (23.2) | 100 (27.6) |
| Obesity | 95 (22.0) | 13 (18.8) | 82 (22.6) |
| Kidney disease: chronic kidney disease or chronic kidney failure | 61 (14.1) | 7 (10) | 54 (14.9) |
| Chronic obstructive pulmonary disease or emphysema | 43 (10.0) | 8 (11.6) | 35 (9.6) |
| Cancer | 38 (8.8) | 3 (4.3) | 35 (9.6) |
| Immunosuppression | 22 (5.1) | 2 (2.9) | 20 (5.5) |
| Hepatitis C or chronic liver disease | 18 (4.2) | 2 (2.9) | 16 (4.4) |
| Other† |
13 (3.0) |
1 (1.4) |
12 (3.3) |
| Total underlying conditions | |||
| 0 | 115 (26.6) | 17 (24.6) | 98 (27.0) |
| 1 | 113 (26.2) | 24 (34.8) | 89 (24.5) |
| 2 | 93 (21.5) | 10 (14.5) | 83 (22.9) |
| >3 |
111 (25.7) |
18 (26.1) |
93 (25.6) |
| Skin injury | |||
| Any skin injury | n = 412* | n = 70* | n = 342* |
| No | 211 (51.2) | 36 (51.4) | 175 (51.2) |
| Yes | 201 (47.8) | 34 (48.6) | 167 (48.8) |
| Type of skin injury‡ | n = 201 | n = 34 | n = 167 |
| Nonsurgical wound | 127 (63.2) | 22 (64.7) | 105 (62.9) |
| Surgical wound | 17 (8.5) | 3 (8.8) | 14 (8.4) |
| Trauma§ | 47 (23.4) | 8 (23.5) | 39 (23.4) |
| Burn | 2 (1.0) | 0 | 2 (1.2) |
| Skin breakdown | 3 (1.5) | 1 (2.9) | 2 (1.2) |
| Other |
5 (2.5) |
0 |
5 (3.0) |
| Behavioral risk factors | |||
| Current cigarette smoking¶ | n = 375* | n = 60* | n = 315* |
| No | 310 (82.7) | 49 (81.6) | 261 (82.9) |
| Yes | 65 (17.3) | 11 (18.3) | 54 (17.1) |
| Substance abuse | n = 386* | n = 63* | n = 323* |
| Alcohol abuse | 27 (7.0) | 5 (7.9) | 22 (6.8) |
| Methamphetamine use | 6 (1.6) | 0 | 6 (1.8) |
| Injection drug use | 8 (2.1) | 0 | 8 (2.5) |
| None of the above | 346 (89.6) | 58 (92.1) | 288 (89.2) |
| Other risk factors | n = 389* | n = 66* | n = 323* |
| GAS pharyngitis | 31 (8.0) | 7 (10.6) | 24 (7.4) |
| Household member with GAS | 8 (2.1) | 2 (3.0) | 6 (1.9) |
| Influenza | 12 (3.1) | 4 (6.1) | 8 (2.5) |
| None of the above | 336 (86.4) | 54 (81.8) | 282 (87.3) |
*Excludes missing data. †Other underlying conditions include paralysis, neurologic conditions, and developmental delay. ‡Data from 201 cases with a skin injury reported. §Cut, laceration, or puncture wounds. ¶Does not include e-cigarette use or vaping.
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Page updated: August 22, 2022
Page reviewed: August 22, 2022
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