People have been having colds and influenza (flus) since the beginning of Time (and remember, Time was invented by humans!). Epidemics started not long after, and flu pandemics now occur every year.

The main distinguishing features between cold and flu symptoms, are that flus are often accompanied by muscle aches and high temperatures. Flu in addition tends to infect the lungs and cause  more malaise (feeling “under the weather”). more…