Long before the medical and political establishments were afraid of the opinions of antivaxers, there were basic rules everyone knew about vaccines, you never give them them a pregnant woman or a cancer patient, for that exact reason. Doctors used to tell parents to keep their kids away from cancer patients for 2 weeks after their shots, because of "shedding". Then, once they became afraid of the antivax movement, and because the population has the shortest memory in existance, they started changing the rules and doctors who once always gave the first advice to patients, suddenly overnight changed what they told their patients, without questioning the sudden change. Now you have a whole bunch of people who think vaccines can't possibly give you the thing you are vaccinated against and that they don't shed and that cancer patients and pregnant women are the ones who need it the most.
Long before the medical and political establishments were afraid of the opinions of antivaxers, there were basic rules everyone knew about vaccines, you never give them them a pregnant woman or a cancer patient, for that exact reason. Doctors used to tell parents to keep their kids away from cancer patients for 2 weeks after their shots, because of "shedding". Then, once they became afraid of the antivax movement, and because the population has the shortest memory in existance, they started changing the rules and doctors who once always gave the first advice to patients, suddenly overnight changed what they told their patients, without questioning the sudden change. Now you have a whole bunch of people who think vaccines can't possibly give you the thing you are vaccinated against and that they don't shed and that cancer patients and pregnant women are the ones who need it the most.