WASHINGTON Federal health officials will play it safe next flu season.Just in case there's a shortage like last year, people most at risk will be vaccinated first. That means those 65 or older, nursing home residents, anyone with a chronic condition such as heart or lung disease, babies and toddlers ages six to 23 months, pregnant women, and health care workers who care for high-risk patients.Doctor Julie Gerberding of Atlanta-based Centers for Disease Control and Prevention says the flu vaccine will then be made available to others. She says people will "have to pay attention, because the message will evolve."The C-D-C says it's working hard to avoid a repeat of last fall, when problems with one manufacturer eliminated half of the U-S supply of flu vaccine. Copyright 2005 Associated Press. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.