Answer the following yes/no questions with the correct short answer. For example: Yes, he did. OR No, he didn't.
Does flu season occur annually in all countries?
Does the influenza virus have its greatest impact during the winter?
Are people indoors and close together during the winter?
Can indoor air dry up the virus?
Does the virus kill about 360,000 people in the U.S. annually?
Does the virus kill mostly elderly people?
Is the preventive flu shot guaranteed to prevent the flu?
Does influenza spread easily among those who do not get the shot?
Do victims frequently get ill from shaking hands?
Do the symptoms often last for a month?
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