The typical symptoms of swine flu are a sudden fever of at least 38°C and sudden cough with at least one other symptom of chills, lethargy, dehydration, headache, sorethroat, coryza, diarrhoea, vomiting, abdominal pain, myalgia or arthralgia. Gastro intestinal symptoms (vomiting and diarrhoea) have also been reported more often with H1N1 than with seasonal flu (Table 2A) .