The haingles (Influenza or juist the flu) is a gey common illness. It is smittle, sae it passes frae ae body tae anither gey eith. For ordinar, it spreids athort the warld in saisonal epidemics. In the 20t century, there wis three muckle epidemics (cried pandemics an aw) that kilt millions o fowk. A type o haingles is Bird haingles.
The illness affects the ower airweys an the lungs, whit mediciners cries the respiratory tract.
There is a vaccine agin the haingles.