MIKE STOBBE AP Medical Writer NEW YORK (AP) — It may end up being a bad flu season for kids, but early signs suggest the vaccine is working OK. The vaccine has been more than 50% effective in preventing flu illness severe enough to send a child to the doctor's office, the U.S. Centers for Disease Control and Prevention said Thursday. Health experts consider that pretty good. The vaccines are made each year to protect against three or four different kinds of flu virus. The ingredients are based on predictions of what strains will make people sick the following winter. It doesn't always work out. This flu season has featured two waves, each dominated by a different virus. Both of those flu bugs are considered dangerous to children, but tend not to be as dangerous to the elderly. Hea
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