If the subject of vacines is open and shut case then why were there several hospitals who had to threaten to fire their nurses for refusing inoculations?
Because we live in an age where the miracles of vaccination and antibiotics have removed from us the agony of:
Watching children die from common diseases,
Watching young men and women die from infections and simple ailments,
And where medical progress has doubled life expectancy in one lifetime.
Now, people do not understand the gravity and importance of these things. Their great-grandparents would have given anything and everything to have the vaccines we have today, and not see one out of four of their children die painful deaths.
Because they don't SEE these things, they become opinions, conspiracy theories, and controversies.
Why did the Nursing unions fight this? Why did several hospitals have to back down from their demands and threats of terminations?
The hospital has a vested interest in making sure their employees are not spreading illness.
One of the issues with the unions was that if anyone got sick after taking the vaccine, then they insisted that it be treated as a work-related illness (whether you CAN get sick from the vaccine is a separate issue).
Some people refuse to be told to do anything. Some refuse vaccinations for various philosophical reasons.
The union sees its job as to represent the members who do not want to comply with the requirements of the company. The union's opposition has nothing to do with the merits or weakness of the hospital's position.
SOME hospitals backed down in the face of union opposition, from threats of lawsuits or contract grievances. The fact that hospital backed off also has no correlation to the merits of weakness of the hospital's position, merely a judgment as to the cost of the fight and likelihood of being successful before it's too late to have a positive impact.
These are exactly the same issues we had when the smallpox vaccine was made available to healthcare personnel in 2002.