plz try to clear out your question. Exactly what help you need if you are travelling to US.
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Moreover, have u forgot SWINE FLU and dont u know that your children in this age are very much vulnerable to almost all sort of diseases. Can you see them suffering from anyone of them. I will urge you not to go atleast with your children unless it is extremely important
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Anyhow, go to HMC and seek medical help b4 departuring to USA