I honestly don't see the problem requesting anyone around a newborn to have the flu shot or Tdap. Those are current CDC recommendations. New born babies have limited immune systems and "minor" illnesses can kill them. Are you sure you're not making up the measles, polio, etc part of the story to embellish?
I'd want to see the actual e-mail before deciding to mock SIL.
not going to post the whole email but while she didn't specifically say measles and polio, she did say:
If you plan to visit us during Christmas time, please be have a flu shot! It takes up to two weeks for full immunity to build from the shot, so get that well in advance of your visit. If you wish to spend a decent amount of time (or visit in the first couple of months) with our baby and us, then we also request you get your tDAP, so that we have a cocoon of protection for her from whooping cough. The vaccine does not provide lifetime immunity, so you need a new one to safely be around our child. If you had a tetanus booster in the past two years, make sure it had the pertussis part. We also ask that you refresh any other vaccinations that you have not received in the past 5 years (or less if recommended by the doctor.)
With the exception of that last line, that's not an unreasonable request. Her request is actually based on real evidence and the risk of her getting whooping cough is very real and potentially very dangerous. The "refresh any other vaccinations" is a bit much as there isn't really anything else that should be of any concern.
The use of the words "cocoon of protection" comes off a bit paranoid, but it is still a legitimate concern.
Took the words right out of my mouth.
Listen, the baby is going to be +/- less than a week old, with naive immunity, with dozens of new people introducing new pathogens to a baby due to the holidays.
It does take 2 weeks for the flu shot to build immunity.
And yes, the Tdap ("p" part is for whooping cough) does wane and is recommended every 10 years and updating anytime you'll have someone around a baby. I generally think of it as someone ie a grandparent that will be touching the baby and caring for the baby more often. SIL does refer to this as someone that will be around a "decent amount of time."
Mentioning tetanus isn't a new type of shot. Tdap=Tetanus, diptheria, & acellular pertussis. Asking to make sure if has the "p" in it is from the CDC because technically it is the Td that needs updating every 10 years, but it is almost always the Tdap that people get since it is much more readily available.
Most everything she states it sounds like is being regurgitated from a health care practitioner. The "cocoon of protection" is a little weird and it sounds like "refresh any other vaccinations that you haven't received in the last 5 years," is her taking something a doctor said and misconstruing it.
As health care practitioners, my wife and I didn't have to send an e-mail out like this when our 30 week preemie baby was born. But if I was planning on having tons of people over, I could have see making a similar request: just minus the cocoon of protection and the last sentence.
Basically, I think you're a jerk to mock your SIL and everyone else here is being a lemming.
Edit: And BTW, the flu and Tdap require about 10-20 minutes of your wife and your time by going down to your pharmacy and getting the shots for free. It sounds like, based on your knowledge of these shots, that you are probably due for both of the shots anyways.