What causes nausea sore throat, fever and muscle weakness in polio?

I’m writing a paper about polio. I know that in type I polio, symptoms include sore throat, nausea, fever, and abdominal pain. what I really need to know is WHY these symptoms occur when you have polio.
also, what causes vomiting when you have polio?
I REALLY NEED HELP! THANKS!

“Poliovirus can survive and multiply within the blood and lymphatics for long periods of time, sometimes as long as 17 weeks. In a small percentage of cases, it can spread and replicate in other sites such as brown fat, the reticuloendothelial tissues, and muscle. This sustained replication causes a major viremia, and leads to the development of minor influenza-like symptoms. “

Mount Kinabalu Expedition – Tanjung Tualang, Malaysia (kinabalu ecpedition)

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