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Volume 31, Number 11—November 2025
Research
Community-Driven, Text Message–Based COVID-19 Surveillance System, Los Angeles County, California, USA, 2020–2024
Table
Demographic characteristics of Los Angeles County adults and respondents to the Angelenos in Action community-driven, text message–based COVID-19 surveillance system, California, USA, 2020–2024*
| Characteristics | No. (%) |
||
|---|---|---|---|
| Los Angeles County adult population | Respondents who answered >1 survey† | Active respondents‡ during 2023–2024 season† | |
| Total |
7,364,388 |
17,092 |
7,388 |
| Age, y | |||
| 18–29 | 1,540,122 (20.9) | 1,388 (8.1) | 328 (4.4) |
| 30–39 | 1,360,790 (18.5) | 3,881 (22.7) | 1,256 (17.0) |
| 40–49 | 1,260,968 (17.1) | 4,751 (27.8) | 2,033 (27.5) |
| 50–59 | 1,251,487 (17) | 3,813 (22.3) | 1,967 (26.6) |
| 60–69 | 1,058,203 (14.4) | 2,396 (14) | 1,345 (18.2) |
| >70 | 892,818 (12.1) | 814 (4.8) | 440 (6) |
| Not given |
NA |
49 (0.3) |
19 (0.3) |
| Sex | |||
| M | 3,601,392 (48.9) | 3,995 (23.4) | 1,640 (22.2) |
| F | 3,762,996 (51.1) | 12,984 (76) | 5,708 (77.3) |
| Not given |
NA |
70 (0.4) |
23 (0.3) |
| Race | |||
| American Indian | 14,582 (0.2) | 51 (0.3) | 23 (0.3) |
| Asian | 1,218,430 (16.5) | 1,668 (9.8) | 693 (9.4) |
| Black | 590,152 (8) | 493 (2.9) | 250 (3.4) |
| Hawaiian/Pacific Islander | 13,467 (0.2) | 77 (0.5) | 33 (0.4) |
| Latino | 3,380,602 (45.9) | 4,985 (29.2) | 2,068 (28.0) |
| Multiracial | NA | 845 (4.9) | 379 (5.1) |
| White | 2,147,155 (29.2) | 8,530 (49.9) | 3,792 (51.3) |
| Other | NA | 238 (1.4) | 77 (1) |
| Not given | NA | 205 (1.2) | 73 (1) |
*NA, not available. †Through April 6, 2024. ‡Active respondents are defined as those who submitted >1 survey during that year’s Morbidity and Mortality Weekly Report influenza season (MMWR week 40 of that year through MMWR week 39 of the next year) (10).
Page created: September 23, 2025
Page updated: November 26, 2025
Page reviewed: November 26, 2025
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