CINCINNATI (WXIX/Gray News) - Officials are advising parents to keep at-home COVID-19 test kits away from kids because they could contain a harmful, toxic substance. The Cincinnati Drug and Poison Information Center is reporting an uptick in accidental exposures to a possibly toxic substance in at-home COVID-19 test kits, the Cincinnati Children’s Hospital Medical Center said in a blog post on its website. Poison control centers nationwide are reporting the same finding, WXIX reported. This comes as more than 50 million households recently received free at-home COVID-19 tests from the federal government, according to Dr. Tom Inglesby, senior advisor for...