Disclaimer: Early release articles are not considered as final versions. Any changes will be reflected in the online version in the month the article is officially released.
Volume 32, Number 5—May 2026
Research
Investigation of and Response to Autochthonous Dengue, Los Angeles County, California, USA, August–November 2024
Aisling M. Vaughan
, Claire Park, Van P. Ngo, Zuelma A. Contreras, Jordan John Lee, Phoebe Danza, Meredith Haddix, Olivia Moir, Nicole Green, Michael Brown, Taylor Burleson, Amy Marutani, Ashley Nicholas, Tristan Hallum, Steve Vetrone, Liza Ortiz, Gladys Fernandez, Eric El-Tobgy, Jose Escobar, Tricia-Nicole Gandela, Cristin Mondy, Jan King, Brandon Dean, Elizabeth Rubin, Pablo Valadez, Stella Fogleman, Dawn Terashita, Sharon Balter, and Umme-Aiman Halai
, Claire Park, Van P. Ngo, Zuelma A. Contreras, Jordan John Lee, Phoebe Danza, Meredith Haddix, Olivia Moir, Nicole Green, Michael Brown, Taylor Burleson, Amy Marutani, Ashley Nicholas, Tristan Hallum, Steve Vetrone, Liza Ortiz, Gladys Fernandez, Eric El-Tobgy, Jose Escobar, Tricia-Nicole Gandela, Cristin Mondy, Jan King, Brandon Dean, Elizabeth Rubin, Pablo Valadez, Stella Fogleman, Dawn Terashita, Sharon Balter, and Umme-Aiman Halai
Table
Characteristics of patients with locally acquired dengue cases, Los Angeles County, California, USA, August–November 2024*
| Characteristic | Value |
|---|---|
| Total |
14 (100) |
| Median age, y (range) |
54 (5–79) |
| Age group, y | |
| 0–19 | 1 (7) |
| 20–39 | 2 (14) |
| 40–59 | 8 (57) |
| >60 |
3 (21) |
| Sex | |
| F | 8 (57) |
| M |
6 (43) |
| Location | |
| Neighborhood A | 8 (57) |
| Neighborhood B | 2 (14) |
| Neighborhood C | 1 (7) |
| Neighborhood D | 1 (7) |
| Neighborhood E | 1 (7) |
| Neighborhood F |
1 (7) |
| Epidemiologic link | |
| Household | 4 (29) |
| Neighborhood† | 6 (43) |
| None |
4 (29) |
| Mosquito exposure | |
| Y | 6 (43) |
| N | 4 (29) |
| Unknown |
4 (29) |
| Symptoms | |
| Fever | 14 (100) |
| Headache | 8 (57) |
| Nausea and vomiting | 8 (57) |
| Chills | 7 (50) |
| Rash | 6 (43) |
| Muscle pain | 5 (36) |
| Joint pain | 4 (29) |
| Diarrhea | 2 (14) |
| Eye pain |
1 (7) |
| Hospitalization | |
| Y | 6 (43) |
| N |
8 (57) |
| Serotype | |
| DENV-3 | 8 (57) |
| DENV-1 or −3‡ | 2 (14) |
| DENV-1 | 1 (7) |
| Unknown | 3 (21) |
*Values are no. (%) except as indicated. Percentages are rounded to the nearest whole number and may not sum to 100%. DENV, dengue virus. †Resided within 1 mile of a case (includes index patient; includes 2 patients identified through household testing). Indeterminant.
Page created: March 24, 2026
Page updated: April 06, 2026
Page reviewed: April 06, 2026
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.