The reason for the requirement of flu shot every year but there is a requirement of only a single inoculation against some other diseases. Introduction: The immune system can be defined as the organs and body processes that resist the infection and toxins. Flu or influenza is a respiratory disease that is caused by a virus. It is extremely contagious and is usually spread by the sneezes and coughs of an infected person.

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Chapter 20, Problem 2AAATB

Summary Introduction

To determine:

The reason for the requirement of flu shot every year but there is a requirement of only a single inoculation against some other diseases.

Introduction:

The immune system can be defined as the organs and body processes that resist the infection and toxins. Flu or influenza is a respiratory disease that is caused by a virus. It is extremely contagious and is usually spread by the sneezes and coughs of an infected person.

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