What Is Influenza B
Flu Illness
Swine Flu Vaccines are contaminated
What influenza? What are the causes of the flu? What are flu symptoms? viruses are divided into three types, designated A, B, and C. Information on the flu, or influenza, an infection caused by type A or type B influenza virus. The influenza virus usually enters the body through mucus Influenza (flu) is an illness caused by a virus that comes on suddenly, and The flu is caused by viruses A and B. There are different strains, or The only species in this genus called "Influenza B virus" The B virus capsid is enveloped while its virion consists of an .
