Volume 16, Number 8—August 2010
Dispatch
Pandemic (H1N1) 2009 Surveillance in Marginalized Populations, Tijuana, Mexico
Timothy C. Rodwell
, Angela M. Robertson, Norma Aguirre, Alicia Vera, Christy M. Anderson, Remedios Lozada, Lwbba Chait, Robert T. Schooley, Xing-quan Zhang, and Steffanie A. Strathdee
, Angela M. Robertson, Norma Aguirre, Alicia Vera, Christy M. Anderson, Remedios Lozada, Lwbba Chait, Robert T. Schooley, Xing-quan Zhang, and Steffanie A. Strathdee
Table
Univariate comparisons of 303 persons screened for pandemic (H1N1) 2009 virus in Tijuana, Mexico, May 1–November 20, 2009*
| Variable | Recruits not meeting inclusion criteria, n = 260 | Suspected case-patients negative for influenza A/B,† n = 36 | Suspected case-patients positive for influenza A/B,† n = 7 |
|---|---|---|---|
| Age, y | 35 (29–43) | 34.5 (31.5–42.5) | 28 (6–48) |
| Male sex | 162 (63.3) | 20 (55.6) | 3 (42.9) |
| Heard about “swine flu” epidemic before screening | 228 (87.7) | 30 (90.9) | 6 (85.7) |
| Subjective fever | 14 (5.4) | 13 (37.1) | 7 (100) |
| Objective fever, oral temperature, °C | 36.5 (36.2–36.8) | 37.1 (36.6–37.5) | 37.9 (37–38.3) |
| Cough | 27 (10.4) | 15 (42.9) | 6 (85.7) |
| Sore throat | 16 (6.2) | 18 (51.4) | 5 (71.4) |
| Severe headache | 40 (15.4) | 23 (65.7) | 4 (57.1) |
| Joint aches | 16 (6.2) | 16 (47.1) | 5 (71.4) |
| Muscle aches | 18 (6.9) | 18 (52.9) | 5 (71.4) |
| Severe fatigue | 23 (8.9) | 17 (48.6) | 5 (71.4) |
| Diarrhea | 12 (4.6) | 9 (25.7) | 0 |
| Vomiting | 10 (3.9) | 5 (14.3) | 0 |
| Traveled outside Tijuana since symptoms started | 10 (3.9) | 7 (20.0) | 3 (42.9) |
| Contact with possible “swine flu” case in past 2 wks | 6 (2.3) | 11 (31.4) | 4 (57.1) |
| Ever received influenza vaccination | 13 (5.0) | 5 (14.3) | 6 (85.7) |
| Heard about “swine flu” from friends | 74 (32.5) | 11 (37.9) | 5 (83.3) |
| Heard about “swine flu” from family | 22 (9.6) | 7 (24.1) | 4 (66.7) |
| Heard about “swine flu” from co-workers | 14 (6.1) | 7 (24.1) | 1 (16.7) |
| Heard about “swine flu” from newspaper | 33 (14.5) | 3 (10.3) | 2 (33.3) |
| Heard about “swine flu” from radio | 80 (35.1) | 12 (41.4) | 6 (100.0) |
| Heard about “swine flu” from television | 182 (79.8) | 23 (79.3) | 6 (100.0) |
| >3 alcoholic drinks/d‡ | 5 (14.7) | 0 | |
| Injection drug user‡ | 16 (45.7) | 0 | |
| In jail 2 weeks before onset of symptoms‡ | 2 (5.7) | 0 | |
| Would be vaccinated for “swine flu” ‡ | 36 (100.0) | 7 (100.0) | |
| Prefer to be vaccinated at hospital‡ | 25 (71.4) | 5 (71.4) | |
| Prefer to be vaccinated at clinic‡ | 1 (2.9) | 0 | |
| Prefer to be vaccinated at PrevenCasa/Casita‡ | 5 (14.3) | 3 (42.9) | |
| Prefer to be vaccinated at mobile clinic ‡ | 0 | 0 |
*Values are no. (%) except for age and objective fever, which are median (interquartile range).
†By rapid influenza testing.
‡Only pandemic (H1N1) 2009 suspected case-patients (n = 43) were asked these questions.
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