From what I hear, the R0 value indicates how many people could be infected from each infected person.
Values of less than one mean the disease will die out.
Values of more than one mean that it will increase, and as the values get greater (like the measles which is around 14)it means it will spread far faster.
I have heard that the only reason Ebola is even close to a value of 2 is because of the burial practices common in those parts of Africa where the dead person’s body is washed by their heretofore uninfected relatives, and that ignorance is high and medical resources are low.
By all accounts it should be closer to 1 than 2, or so I am told.
All in all, the R0 is only a model, and mutations and such would change it accordingly. I am no expert, but I do work in the medical field (now IT) and have a Bachelor of Science degree in Chemistry, so I can understand the concepts better than many lay people, but...I am not an expert. I only understand what I have read and been told, and it makes sense to me.
You are mistaken.
A single person can infect more than one.
If that person has the flu and travels, it
could be hundreds.