The browser or device you are using is out of date. It has known security flaws and a limited feature set. You will not see all the features of some websites. Please update your browser. A list of the most popular browsers can be found below.
The National Institutes of Health is on high alert for new infectious diseases that are making their way into the U.S. In this America Tonight excerpt, Dr. Anthony Fauci, the director of the National Institute of Allergy and Infectious Diseases at the National Institutes of Health in Washington, D.C., talks about diseases that have experts concerned.
Error
Sorry, your comment was not saved due to a technical problem. Please try again later or using a different browser.