Why Are New Flu Vaccinations Required Each Year

question 68

Multiple Choice

Why are new flu vaccinations required each year?

• A) The vaccination does contain enough preservatives to last in the body longer than a year.
• B) The flu virus mutates frequently.
• C) The flu virus can become latent, meaning it can hide from the immune system within the body, so new vaccinations are important to allow for continuing immunity.
• D) The vaccination does not contain enough antigens to create a lasting immune response.

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Definitions:

ANOVA

Analysis of Variance, a statistical method used to assess whether there are significant differences between the means of three or more groups.

MST

An abbreviation that could refer to multiple subject terms, one common being Minimum Spanning Tree, a concept in graph theory used to minimize the path lengths connecting all points in a network.

MSE

Mean Squared Error, a measure of the quality of an estimator—it is always non-negative, and values closer to zero are better.

Horticulturist

A professional or expert involved in the practice of horticulture, focusing on the cultivation of plants for food, comfort, and aesthetic purposes.