BI-1453
Vaccines
Biology · Secondary 4 · Easy · Vaccines
A person recovers from an infection by a virus. Later, they receive a vaccine against the same virus. What is the main way this vaccine helps to reduce deaths from future infections by this virus?
- They directly kill all viruses already inside the body.
- They stimulate the body to produce memory cells before infection occurs.
- They neutralise any toxins produced during the current infection.
- They act as a nutrient source to strengthen body cells.
Sign in to check your answer and see the hint and the worked explanation. Free on PrepLab High.