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NEW YORK (Reuters Health) - A newer version of the whooping cough vaccine doesn't protect kids as well as the original, which was phased out in the 1990s because of safety concerns, according to a new study.

Kim Zolciak and Teresa Giudice are celebrating their birthdays this weekend and it got us thinking about all the reasons why we love these two fabulous Bravolebrities! From their luscious locks to their adorable kids—we just can't get enough! Find out more of our favorite facts about the ladies below. News: OK! Loves: Viva Divas Wine Tell It Like It Is Attitude Kim and Teresa are both known for speaking their minds. While it sometimes results in screaming matches, table flips and wig pulls, we have to admit that we love their tell it like it is attitudes. Plus, both women have simmered down throughout the years and learned how to stand up for what they believe in—without all the drama. Adorable Kids It's been so much fun watching Teresa and Kim's kids grow up on Real Housewives throughout the years. Their spunky personalities and total cuteness make everyone smile! Successful Entrepreneurs From cook books to hair care products, these ladies have entrepreneurial spirits. Kim not only has chart-topping singles, but has recently added Viva Diva Wines to her endeavors. Teresa has also been busy with her four New York Times best sellers and products like a teeth whitening kit.   Love For Juicy Bling How amazing are Teresa and Kim's engagement rings? Their breathtaking rocks and love for bling is just one of the many reasons we're fans of these fabulous women! Luscious Locks Both Real Housewives stars have gorgeous hair. Now fans can duplicate their luscious locks thanks to Teresa's Milania hair care products and Kim's upcoming wig line! What girl doesn't want thick, silky hair like Kim and Teresa? News: 6 Things That Made OK! Cry This Week Photos: Cannes Film Festival Fashion Watch: David Beckham Announces His Retirement from Soccer Did you wish Teresa and Kim a happy birthday? Sound off in the comments below and tweet us @OKMagazine! Photo credit:  Courtesy of Getty, Splash News, Instagram, Twitter and Bravo