Which one of the following is not a bacterial disease?

$(a)$ State the principle of immunisation. Name two diseases for which vaccines are available.
$(b)$ Mention two basic principles of prevention of infectious diseases.

What is inflammation? Write the symptoms of this in the human body.

State whether the following statement is true or false:
The tissues make up physiological systems or organ systems that carry out body functions.

You are aware of the $Polio$ $Eradication$ $Programme$ in your city. Children are vaccinated because:

Choose the wrong statement.