Dolan et al, 1986 (see online), found in a hospital study, that flu is very often
misdiagnosed as a virus disease. They add, "with disastrous effect" because
the patient, in addition to the misdiagnosis, is often given poisonous drugs and
returned to the poisoned environment, ignorant of environmental hazards, and
positioned for another round of drugs and misdiagnostics.
On the DOH website, WNV disease is defined to clinician's as a disease of older
people. Clinicians are strongly encouraged to report this flu-like disease as
"West Nile Virus disease" if the patient is older. They are otherwise encouraged
to presume the symptoms of flu-like disease in younger people as "the flu" or
another disease -- it's the clinician's diagnostic option.
It is an either/or diagnostic, with the 3rd option missing, toxicology.
Toxicology is completely avoided during diagnostics of humans and wildlife,
even though air pollution from boilers, stoves, and vehicles can also cause flu-
Mitchel Cohen's "West Nile Conjecture"
I've long been curious about why young children in the U.S. do not
seem to develop serious symptoms to West Nile Virus, and why older
people are far more susceptible, including a certain low percentage
who die from complications from encephalitis caused, we're told, by
West Nile virus.