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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