Mu bigo 21 bagiriramwo ubushakashatsi muri Amerika, NIH yatanguye yihweza ubwonko bw'abana 4.500 bafise hagati y'imyaka 9 na 10 kugira barabe ko ukuraba canke inkino zo kuri video n'umwanya bamara kuri interenete bitagira ingaruka ku kungene bakura.
