Schools Have Only Mild Flu Symptoms So Far

The seasonal flu has been lying low this year, but health experts say schools need to take precautions to keep the flu at bay over the rest of the season, especially because the cancellation of flu clinics in several areas could mean that fewer children and school employees have been vaccinated in those communities than last year.

The federal Centers for Disease Control and Prevention is reporting fewer patient visits to doctors for flu-like illnesses and says that 30 states had virtually no flu activity in November.

Delays in shipments of flu vaccine have forced some health agencies to cancel flu clinics. The 143,000-student Baltimore County, Md., school district, for instance, last month announced that it would cancel three...