Affecting an estimated 4.9 million beneficiaries in TRICARE Military Health program . . . A breach affecting an estimated 4.9 million beneficiaries in the TRICARE military health program, as well as a Nemours children’s health system breach affecting 1.6 million, will soon be added to the Department of Health and Human Services’ Office for Civil Rights’ tally of major breaches. Once the incidents are added it will bring the total number of Americans affected by breaches to a whopping 18.5 million people.