Use the Concepts of Antigenic Drift and Antigenic Shift to Describe

question 37

Essay

Use the concepts of antigenic drift and antigenic shift to describe why influenza causes both "routine" seasonal outbreaks as well as to periodically cause more serious global outbreaks, or pandemics.

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Definitions:

Repay

To pay back or return money that was borrowed from an individual, institution, or entity.

Allowance for Doubtful Accounts

A contra-asset account used to estimate the portion of a company's receivables that may not be collectible.

Factoring Proceeds

The cash received by a company from selling its accounts receivable to a third party, often at a discount, to immediately improve cash flow.

Noncollections

Amounts due to a company for goods or services provided that have not been collected.