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Table 2 Distribution of symptoms among those who tested positive for influenza A(H1N1) 2009

From: Evaluation of the seroprevalence of influenza A(H1N1) 2009 on a university campus: a cross-sectional study

Symptom No (%) with reported symptom
Chills 52 (32.9)
Cough 92 (58.2)
Diarrhea 29 (18.4)
Fever 75 (47.5)
Headache 83 (52.5)
Muscle Aches 58 (36.7)
Nausea 35 (22.2)
Runny Nose 93 (58.9)
Sore Throat 100 (63.3)
Stuffy Nose 96 (60.8)
Vomiting 17 (10.8)
Met May 2010 CDC definition of ILI 72 (45.6)
Reported Experiencing No Symptoms* 49 (31.0)
  1. *17 of the 49 people (35.0%) who reported experiencing no symptoms also reported receipt of the 2009 H1N1 vaccine
  2. **Sera were considered positive at an HI titre of 1:40 or greater