Influenza virus is an annual concern in the United States and worldwide. Each year, millions of people receive the flu vaccine to protect against the influenza virus. What two viral ligands does the flu vaccine produce immunity to?
A. Hemagglutinin and TNF-a
B. Hemagglutinin and N-acetyl glucosamine
C. N-acetyl glucosamine and Neuraminidase
D. N-acetyl glucosamine and reverse transcriptase
E. Neuraminidase and Hemagglutinin
Answer: E