Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.
1
Is any of this happening now?
Call 911
Call emergency services for:
Severe confusion or difficulty waking
A seizure
Sudden paralysis or inability to move a limb
Trouble breathing or swallowing
Loss of consciousness
Emergency care is not usually needed for stable, slowly improving symptoms.
Other emergency signs, for anyone
Someone who is struggling to breathe, gasping, choking, or cannot get words out
Someone who has chest pain, tightness or pressure lasting more than a few minutes
Someone who has sudden weakness or drooping on one side of the face or body, slurred speech, or sudden confusion
Someone who is unconscious, or cannot be woken
Someone who is bleeding heavily and it will not stop with firm pressure
Someone who has had a seizure that will not stop, or does not wake up afterwards
Someone who has lips or skin that look pale, blue, grey or blotchy
Someone who you believe has taken an overdose or swallowed something poisonous
2
Is any of this happening?
Be seen today
Arrange prompt medical advice if you develop fever, headache, body aches, or a rash after significant mosquito exposure, especially if you are older, immunocompromised, pregnant, or have had an organ transplant.
These symptoms have many possible causes, so an assessment may be needed rather than assuming West Nile virus is responsible.
Seek urgent same-day care for:
Fever with a severe headache or stiff neck
New muscle weakness, shaking, or difficulty walking
Repeated vomiting or signs of dehydration
Symptoms that are rapidly getting worse
And for anyone, someone who:
has a fever with a stiff neck, a rash that does not fade under pressure, or severe headache
has a wound that is hot, spreading red, or leaking pus
3
Does any of this apply?
Book an appointment
Routine follow-up is appropriate for lingering tiredness, reduced strength, balance problems, or concentration difficulties after the acute infection.
Every sign above is quoted from the sofidex article on West nile virus infection. If you are not sure, err upward — it is always reasonable to be checked.