> But in all likely-hood I can see easier laws being passed that might exclude un-vaccinated people from various venues
What about people who are not vaccinated for medical reasons, such as an allergy to the vaccine?
What about people who are not vaccinated for medical reasons, such as an allergy to the vaccine?
Anyone who has ever had a life-threatening allergic
reaction to the antibiotic neomycin, or any other
component of MMR vaccine, should not get the vaccine.
Also, as you noted, some vaccines are twice in a lifetime. MMR, for example, is given at ~1 year old, and at 4-6 years old. If someone has a life-threatening reaction the first time, the CDC says that they should not get the second dose.
Note that MMR vaccine allergies are very rare, so we aren't talking about a huge number of people who have to go around without MMR vaccination.
[1] http://www.cdc.gov/vaccines/hcp/vis/vis-statements/mmr.html
However, it looks like that's only the influenza vaccine, and that's not how the MMR vaccine is produced.