a new study finds flu drugs like tamiflu andell aren a got rid of the -- and rulenza got rid of the symptomsonly one day earlier than if the person didn't take the drug at all. officials say the vaccination has the added bonus of being a preventive measure. >>> resting may provide an extra benefit for women with a family history of breast cancer. it may reduce their chances of developing it. a study of more than 60,000 women found those who nursed a baby and had a family history of breast cancer reduced their risk for it by nearly 60%. lots of reasons to check back in with eyewitness news today at 4:00, 5:00, and 6:00. back to the newsroom for a preview. sally? >>> don, dangerous unrest and chaos when students clash with police. what sparked the violence. >>> and it's the longest- running soap opera ever. today we go on the set as the crew shoots its last episode. >> stay with us. bloom (male anuncer) if you've had a hearatta caused by a completely blocked artery, another heart attack could be lurking, waiting to strike. a heart attack caused by a clot, one that could be fatal. but plavix he