Quote:
Originally Posted by Lady Lilya 
* I was under the impression that you couldn't vax for pertussis until 6 months
* The pertussis vaccine doesn't claim to prevent pertussis contraction, since pertussis is one you can get again and again, unlike most diseases that are vaccinated against
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Following the CDC's vaccination schedule, DTaP is to be given at 2 months, 4 months, 6 months and age between 15-18 months.
The estimate for duration of immunity for pertussis after having the disease is anywhere from 4 years to 20 years. Duration of immunity after getting the vaccine is 4-12 years.
But it is all a moot point. Pertussis is only significantly dangerous to babies under the age of 3 months. Even
if the vaccine worked, and even
if the risks of the shot didn't outweigh the benefits, one DTaP shot at the age of 2 months gives no protection.
Pertussis is significantly under-diagnosed in the US. Lots of adults have it and never know. During these times, they pass it on to others.
So to the OP, no one can make this decision but you. If it were me, I would NOT give my baby the vax, not only because it is highly reactive, but because it doesn't work very well and the one shot she would have prior to the trip gives her NO immunity. Your in-laws don't need to know about your decision. Tell them whatever you need to get them off your back. Your baby, your decision. Period.
When deciding whether or not to go on the trip, I would ask myself the following questions: What area of CA will I be visiting? Is it southern California where more pertussis cases have been diagnosed or it is a different part of the state? Will all of the adults at the home where I will be visiting refrain from coming if they have signs of a cough or upper respiratory illness? Do I feel comfortable putting my babe on a plane with adults who could be exposing her to WC? Do I know the signs and symptoms of WC to look for in my baby? Will I be at home or still on CA after the incubation stage of pertussis? If I will still be in CA, do I have access to health care and am I willing and able to stay in CA while my baby is in the hospital?
I don't buy in to the fear mongering associated with the current "outbreaks" of WC,
BUT I don't have a newborn. If I did, I would not travel to southern California right now. I would not take my newborn to crowded places for a few months. I would not take my newborn on a plane if I could help it. If I had to travel, I would be super attentive to signs of illness in my babe afterward and seek medical attention at the first sign of anything that might be considered WC. Then once my babe was a few months older I would resume my normal activity and relax about it, feeling confident that even if my babe got WC at that point, chances are super high that they would recover just fine.
But, you have to do what you feel is right in your gut for you and your specific situation.