In the wake of Merck's Hib vaccine recall, the CDC is telling docs to stop giving the booster shot that comes due for infants at 12 to 15 months. Sanofi Pasteur won't be able to make up the shortfall, at least not immediately, officials say; Merck recalled 1.2 million doses and shut down production, with new shipments delayed probably until the fourth quarter of 2008. Report