It's rare-: But not impossible. The vaccine is 96-99 % effective, but that still means 1 or 2 in 100 may not build up good antibody levels. If there is concern he has pertussis, cultures can be done. If the concern is did he build up immunity, then a blood test can be done to see if he is indeed immune. That test is not cheap, but if significant concern, then is warranted.
Answered 6/15/2013
5.1k views
A doctor has provided 1 answer
4 doctors weighed in across 2 answers
A doctor has provided 1 answer
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question