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Old 03-24-2013, 12:19 AM   #12
kirst's Avatar
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Join Date: Mar 2012
Location: Canada
Posts: 1,318
Re: Pertussis Vaccine

I got it at my son's 3 month appt. I was told that even though I had a booster about 4 years ago, that i needed another one as there are mutations in the pertussis now and the older vaccines do not protect anymore.
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