How do you know when to be hospitalized when you have influenza type b?

When your doc says: When to be hospitalized is a decision that only your doctor can make based on not only your symptoms but also your overall history and health. In this case, the reasons for hospitalization would likely revolve around supporting your respiratory function. Don't try to be your own doctor. If you're having problems, go see your doc right away.

You Don't...: ...But your doctor or the emergency room doctor usually do. Just having influenza does not necessitate a hospital admission.

Doctor will decide: Most influenza doesn't require hospitalization; patients feel terrible, have severe fatigue, body aches, fever and cough. Influenza can be complicated by secondary infections or underlying health problems like young/old age, heart, respiratory disease, etc. If you doctor suggest hospitalization, i would encourage you to his advise. Influenza can be serious or fatal.