A common viral infection, Influenza can be dangerous if the victim is old, chronically ill or young, it can even kill. There has been 5 known Influenza Pandemics:
1889-1890 - H2N2 (Russian or Asiatic) Strain
1900 - H3N8 Strain
1918-1920 - H1N1 (Spanish) Strain
1957-1958 - H2N2 (Asian) Strain
1968-1969 - H3N2 (Hong Kong) Strain

The Spanish Pandemic was very devastating as it is thought there were more casualties from the pandemic than there were from World War I. The N5N1 (Avian or Bird) Influenza strain is rapidly spreading throughout countries from migrating birds.

A glamorous, more sophisticated, name for the swine flu giving it some much needed flare.

Based on expirence, swine flu is basically a regular flu except you get to take a full week off of school/work and nobody will come near you.

If you have a "suspected" case of the H1N1 and you walk into a medical clinic to ask for an appointment, they force a mask over your mouth and nose and throw you into an isolation room, away from all the other patients.

Then a doctor comes in wearing two face masks and rubber gloves asks about your symtoms and such.

The doctor prescribes asthma medication and cough syrup for the coughing, nasal spray for the runny nose, and then these green & yellow mystery pills.

If you live with very germaphobic people, they will likely quarenteen you in your bedroom and not let you leave unless you have bathed in hand sanitizer and are wearing a face mask.

NOTE: this disease can be caused by sleeping over at the house of a contaminated person, but it is apparently not transferred through making out with your boyfriend.

Using your sick leave to enjoy the day off from work, when your not really sick.

Influenza F is created throught the mental brain of a person. Usual caused by toxicity in Fortnite Battle Royale. This type of influenza is the most dangerous because it can cause Ligma, sugma, and most dangerous, stay hone from school disease. If you have any of these synptoms please use code Cizz in the Fortnite Item Shop to get your medication.

Like Bieber Fever except infinitely better because it's Andy Biersack instead

When people are very attracted to, often to the point of it becoming a fetish for, ginger people. It is the term that is equivalent in meaning to terms such as Yellow Fever' but obviously applied to ginger people rather than Asian people.

A virus that promotes products and services on Instagram and tries to take viral photos as a marketing gimmick in exchange for being transmitted between humans.

Virus that spreads easily but is too afraid to manifest.