Waller made it to the final ten hopefuls despite this but had to pull out with a voice-killing sore throat.

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At the beginning of the season, the CDC sought out patients with symptoms such as cough, sore throat, flu-like symptoms.

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The virus, which is spread through coughing and sneezing, has symptoms similar to those produced by ordinary seasonal flu - fever, cough, sore throat, aches, chills and fatigue.

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Scientists say symptoms of swine flu in humans appear to be similar to those produced by standard, seasonal flu - fever, cough, sore throat, body aches and chills.

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But side effects can include mild flu-like symptoms, including a runny nose or sore throat.

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During known outbreaks, a diarrheal illness is likely to be Norovirus and an influenza-like illness (defined as temperature of 100 or greater, cough or sore throat, and not other explanation) is likely to be flu.

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