"A crown does not confer immunity from the just wrath of an offended God!"
The vaccine also appears to confer less immunity to children younger than 15 months.
That had been two weeks before the drop but perhaps it didn't take that long to confer immunity.
It took two weeks for the inoculation to confer full immunity, and seven days before partial.
The Mozart children were thereafter safe from the disease, which confers immunity on its survivors.
Once someone had smallpox it conferred immunity, but not to the offspring of the survivor.
The drug has an antidote which also confers permanent immunity.
Boosters are available that confer immunity for one year or three years.
We know that wealth does not confer immunity to addiction.
But having a doctorate does not confer immunity from academic rage.