British killer nurse Lucy Letby loses appeal bid for attempted baby murder conviction
EPA imposes stricter standards to protect children from exposure to lead paint
Bad state data may misdirect nearly $1 billion in federal funds to replace lead pipes
People 50 and older should get pneumococcal vaccine, US science panel recommends
50 years after Philadelphia halted prison medical testing, families seek reparations
What to know about E. coli and the McDonald's outbreak
A look at food-related illnesses at restaurants over the years
McDonald's tries to reassure customers after deadly E. coli outbreak
