Why doesn't one case of influenza infection confer lifelong immunity on the host?

1 answer:

7 0

The reason why one case of influenza does not confer lifelong immunity is that the virus tends to mutate overtime which makes it unrecognizable to the immune system.

<h3>Why is it difficult to get immunity to influenza?</h3>

Influenza is caused by a virus which tends to mutate overtime in order to stay ahead of medical technology.

As a result, this mutation makes the original virus unrecognizable to the immune system which would then be unable to fight it.

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The ability to evaluate a situation, identify alternatives, select a reasonable alternative, and make a decision to implement a

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Answer:

The correct answer here is conceptual and design skill.

Explanation:

Conceptual and design skill is one of the most important management skill that a manager should possess, as this skill represents a manager's ability to think creatively, do proper analysis of complicated problems, and understand the interrelationship between organization's divisions, and see overall how a firm fits in to and affect the environment . Therefore the skill which is being talked in the question is conceptual and design skill.

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Height and weight are positively correlated. This means that: a. There is no relationship between height and weight. b. Usually,

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Answer: As height increases, typically weight increases.

Explanation: Positive correlation can be defined as a reciprocal, parallel or complementary relationship between two or more comparable objects where where if one variable increases, the other one also increases. A positive correlation also exists in one decreases and the other also decreases.

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The fact that berta uses her lips instead of her finger to point at an object across the room illustrates that communication is

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Communication is symbolic

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After all probabilities and payoffs are placed on a decision tree, the decision maker calculates expected values at state of nat

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The statement is true.

The area of mathematics known as probability deals with numerical representations of the likelihood that an event will occur or that a statement is true. An event's probability is a number between 0 and 1, where, roughly speaking, 0 denotes its impossibility and 1 denotes its certainty. The higher an event's probability, the more likely it is that it will occur. A straightforward illustration is tossing a fair (impartial) coin. The chance of both outcomes ("heads" and "tails") is equal because the coin is fair, "heads" is more likely than tails.

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Choosing between spending money on a new suit or a vacation is an example of ___.

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Choosing between spending money on a new suit or a vacation is an example of <u>Social Security</u>.

No matter how much or how little you spend, purchasing a suit is a significant investment because it will be among your most valuable possessions. A decent suit allows you access. It offers chances that would not be available otherwise.

Social security is the safety net that a society offers to individuals and families to ensure that they have access to health care and to assure financial stability, particularly in circumstances of old age, unemployment, illness, invalidity, work injuries, maternity, or the death of a primary earner.

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