What is the difference between a vaccine and antiviral drugs?
Answer Vaccines are usually given as a preventive measure. Currently available viral vaccines are usually made from either killed virus or weakened versions of the live virus or pieces of the virus that stimulate an immune response to the virus. When immunized, the body is then poised to fight or prevent infection more effectively. Antivirals are drugs that may be given to help prevent viral infections or to treat people who have been infected by a virus. When given to treat people who have been infected, antivirals may help limit the impact of some symptoms and reduce the potential for serious complications, especially for people who are in high risk groups.