she's now asking for your help. here's dr. richard besser. >> reporter: mandy moore is in the central african republic to distribute bed nets for a group called nothing but nets. >> voila! >> reporter: their goal? to help prevent malaria, a disease transmitted by mosquitos that infects over 500 million people and kills more than 1 million each year. >> realizing that a child in africa dies every 45 seconds from malaria, and that really with just $10, that's all it takes to send a net and change a life. i was in. >> reporter: mandy, who had millions of fans, says the person she admires most is this 10-year-old girl from philadelphia, katherine commale. >> she's definitely without a doubt an inspiration. >> my goal would be everyone in africa gets a bet net who needs a bed net. >> reporter: when katherine at age 5 learned millions of children's lives could be saved