What are the Symptoms?

High fever Severe headache
Rash or purple patches on skin Vomiting
Light sensitivity Stiff neck
Confusion and sleepiness Nausea
Lethargy Seizures

There may be a rash of tiny, red-purple spots caused by bleeding under the skin. These can occur anywhere on the body.

The more symptoms, the higher the risk, so when these symptoms appear seek immediate medical attention.