I'm training to be an engineer <a href=" http://lesterhospitality.com/types-of-writing-essays/ ">where is the best to buy essays online</a> For example, at this point in the season, the CDC typically tests early flu strains to see how well they match with the seasonal vaccine. That information gives public health officials important clues about what to expect from flu season and how to adjust their strategies. The CDC also conducts an annual public awareness campaign, tests early cases of the flu to determine resistance to antivirals and provides regular surveillance information to states.