Back-to-school sickness: Pediatrician shares 3 tips to help keep kids healthy this season

As classes start back up, so do the cases of sickness that so often seem to accompany back-to-school season. But experts say there are ways to help keep students protected.

"Going back to school, there always is an increase in infections when kids are closely around each other and there can be clusters of infections," says Dr. Evelyn Chan, pediatrician and CEO of digital therapeutics company Smileyscope.

Pharmacies across the U.S. are already contending with an industrywide shortage of the drug amoxicillin, an antibiotic that's commonly prescribed to treat a variety of childhood infections, including things like ear infections, strep throat and pneumonia.