Flu symptoms are very common. They reflect the body's repair rate falling below its degeneration rate. Since there is no such thing as a virus causing flu you are simply observing incidences of jab poisoning. People suffer from flu symptoms in times of lower solar radiation and higher toxin exposure ("vaccines", mould, pollen, aerosolised pollutants coupled with damp conditions). The immune system is also suppressed by cold temperatures and high inflammatory diets.