NEED TO KNOW

Maureen Kamischke’s adoptive daughter, Maren, was likely infected with hepatitis B at an orphanage

She shares with PEOPLE how the infection impacted Maren's life and the stigma associated with it

Maureen urges parents not to delay the vaccine: "Don't take the chance that your child could be infected"

Maureen Kamischke knew something was wrong when she brought her 10-month-old adoptive daughter Maren home from China in 1998. “She was not where she should have been,” Kamischke tells PEOPLE.

She and her husband Kent, who live in the Washington, D.C., area, had adopted another daughter two years earlier, and could see right away that Maren's development was different.

“She was what you call a floppy baby,” Kamischke says of Maren's fatigue and weakness.

“We knew something w

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