Duplicate Retweets from streaming API


I am new to the developer forum. I am using streaming API to get real time tweets. My problem is that the same retweet (by the same person and having same id&parent id) is getting pushed into my system multiple times over a period. I have received 13 entries of the same tweet over a period of 3 days. I am not able to figure out the cause for this and if this is a known issue, is there a work around to make sure that duplicate tweets are ignored?