More schools close, swine flu cases pass 100

WASHINGTON — Nearly 300 schools scattered around the country closed as the nation's swine flu caseload passed 100 Thursday, and U.S. authorities pledged to eventually produce enough vaccine for everyone — but said shots couldn't begin until fall at the earliest.

The outbreak penetrated over a dozen states and even touched the White House, which disclosed that an aide to Energy Secretary Steven Chu apparently got sick helping arrange President Barack Obama's recent trip to Mexico but that the aide did not fly on Air Force One and never posed a risk to the president.

An estimated 12,000 people logged onto a Webcast where the government's top emergency officials sought to cut confusion by answering questions straight from the public: Can a factory worker handling parts from Mexico catch the virus? No. Can pets get it? No.

And is washing hands or using those alcohol-based hand gels best? Washing well enough is the real issue, answered Dr. Richard Besser, acting chief of the Centers for Disease Control and Prevention. He keeps hand gel in his pocket for between-washings but also suggested that people sing "Happy Birthday" as they wash their hands to make sure they've washed long enough to get rid of germs.

It is safe to fly, U.S. officials found themselves stressing after Vice President Joe Biden got off message Thursday. Biden said he'd discourage family members from flying or even taking the subway. The White House insisted the vice president meant to say he was discouraging just nonessential travel to Mexico, the hardest-hit area.

"It is safe to fly. There is no reason to cancel flights," Transportation Secretary Ray LaHood said. Not just planes but "all modes of transportation are safe in America," he added.

But anyone with flu-like symptoms shouldn't be traveling anywhere unless they need to seek medical care — the same advice that doctors give during the winter when regular flu kills 36,000 Americans each year.

"If you're ill, you shouldn't get on an airplane or any public transport to travel," CDC's Dr. Anne Schuchat told a congressional hearing. "If you're sick, stay home. I can't tell you how many times I've said that this week."

So far U.S. cases are fairly mild for the most part, with one death, a Mexican toddler who visited Texas with his family — unlike in Mexico where more than 160 suspected deaths have been reported. In fact, Schuchat said most of the U.S. cases so far didn't need a doctor's care.