A vaccine to a virus allows the body to be exposed to the virus and not get sick. This allows the body to recognize the virus and better fight the virus if the person does become infected. How would a vaccine help someone deal with a virus which causes an acute infection?

• A. The vaccine could shorten the duration of the viral infection.
• B. The vaccine could worsen the symptoms of the viral infection.
• C. The vaccine entirely stops the virus from entering the cells of the individual.

Answer: (A)

Verified step by step guidance

1. Understand the role of vaccines: Vaccines are designed to stimulate the immune system to recognize and fight pathogens, such as viruses, without causing the disease itself.
2. Identify the type of immune response: Vaccines typically induce an adaptive immune response, which involves the production of antibodies and the activation of T-cells that can recognize and respond to the virus more effectively upon future exposure.
3. Consider the nature of acute infections: Acute infections are characterized by rapid onset and typically short duration. The immune system's ability to quickly recognize and respond to the virus can help reduce the severity and duration of the infection.
4. Evaluate the potential outcomes of vaccination: A successful vaccine can lead to a faster immune response upon exposure to the virus, potentially shortening the duration of the infection and reducing symptoms.
5. Analyze the options: The correct answer should align with the understanding that vaccines prepare the immune system to respond more effectively, which can result in a shorter duration of the viral infection rather than completely preventing the virus from entering cells or worsening symptoms.