Harnessing Online Tools to Track-and Treat-Pediatric Illness: New tools are giving researchers, physicians, and child-care centers insight into the spread of disease.

Measles. A strange polio-like paralysis. Ebola. In the last year, the spread of infectious disease has become standard fare for the nightly news. As such diseases grab headlines, child-care providers, families, schools, and public health officials are turning to new ways of understanding and coping with the spread of disease.