Your friend is feeling the onset of a cold and runs to the store to buy Cold-EEZE or Zicam. She hopes that it will work. She calls you to ask how the products work because you are the only person she knows who has taken microbiology. Which stage in the virus infection cycle is this treatment targeting? Explain how this treatment may actually shorten the duration and severity of the infection. Do they have data to back up their claims? In your opinion is one of them a better choice than the other?