Excerpts: On average, no more than about 20% of the “flu” cases in the USA each year seem to be caused by influenza viruses. The disease “flu” can be defined as any acute respiratory infection (ARI) that is characterized by a patient’s exhibiting two (2) or more of the following symptoms, “body temperature ≥37.8°C [≥ 99.5°F], cough, sore throat, headache, runny nose, phlegm, and myalgia [muscle pain/ache]”.
Influenza was and is a minor subset of the cases of “flu” that typically occur and are labeled “flu” in the “flu season” that starts in the Fall. The “flu” can be caused by “influenza types A and B (including 2009-H1N1), RSV types A and B, parainfluenza types 1–4, metapneumovirus, rhinovirus, coxsackievirus/echovirus, adenovirus types B and E, bocavirus, and coronavirus types NL63, HKU1, 229E, and OC43” as well as possibly other viruses
Vaccines: There are NO “flu” vaccines, where, to be a “flu” vaccine, the vaccine would have to be made to provide protection from ALL of the viruses that have been found to cause the symptoms of “flu” in humans!
MOREOVER: The inactivated-influenza vaccine has been found, in at least two studies, to increase the risk that those who are vaccinated with it will subsequently contract a noninfluenza viral respiratory infection.