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Table 2 Comparison of epidemiological linked exposures of enrolled PUE cases reported to the surveillance officer versus documented in the medical record

From: Lessons from an active surveillance pilot to assess the pneumonia of unknown etiology surveillance system in China, 2016: the need to increase clinician participation in the detection and reporting of emerging respiratory infectious diseases

Relevant Exposures Surveillance Officer Interviewed Patients (N = 303) Documented in Medical Record by Clinicians (N = 311) p value
Yes N (%, 95 CI*) No N Not Documented N(%, 95 CI) Documented “Yes” N Documented “No” N  
Had animal exposure** in 14 days before illness onset 62 (20, 16–25) 241 292 (94, 91–96) 0 19 0.03
Had close contact with similar cases of respiratory diseases 58 (19, 15–24) 245 296 (95, 92–97) 9 6 < 0.01
History of seeing a doctor in a medical institution with respiratory communicable diseases cases 58 (19, 15–24) 245 281 (90, 87–93) 13 17 < 0.01
History of traveling to or living in areas of novel respiratory epidemics 0 303 258 (83, 78–87) 0 53
Case works with poultry/livestock 3 (1, 0.3–2.9) 300 22 (7, 5–10) 2 287 1.00
Case is health care worker 3 (1, 0.3–2.9) 300 22 (7, 5–10) 0 289 0.25
Case is laboratory staff 0 (0, 0–1.3) 303 22 (7, 5–10) 2 287 0.24
Any contact with parasites-infected water Not asked Not asked 137 (44, 38–50) 0 174
  1. *CI refers to Confidence Interval
  2. **Exposure to poultry, pigs, et al.