Seasonal influenza and Ebola virus infection can cause some similar symptoms. However, of these viruses, you are far more likely to have Influenza, or Flu. Influenza is very common. Millions of people are infected, hundreds of thousands are hospitalized and thousands die from flu each year. In the United States, fall and winter is the time for flu. While the exact timing and duration of flu seasons vary, outbreaks often begin in October and can last as late as May. In the United States, there have been two travel-associated cases of Ebola and two locally (in Texas) acquired cases of Ebola among healthcare workers.