"Only a vaccine will work!!"
(www.cbc.ca)
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This is not true. Look at how Hep A and Hep B vaccines work. With these vaccines you get an inactive version of the Hep A/B virus and your body counters these with producing antibodies. These antibodies will fend off any Hep A/B infection, but only for a few years. After that you need another round. Same goes influenza. The vaccine for influenza A or B will only protect you for six months. That's why for example my wife (a teacher) has to get a flu shot every year.
The Flu shot isn’t a cure for “the flu” that needs an annual boost. It’s inoculation against a random selection of this years most popular viruses.
No guarantee it works.
https://www.cdc.gov/flu/prevent/vaccine-selection.htm
And if the CDC decides that the most common type of influenza is the same as last year, you will still need to refresh it, regardless if you got the same vaccine last year.
Quite often the strains mutate in the wild and the flu shot is useless.
Not something anyone “needs” unless your employer compels you to inject it.
And the Coronavirus is different. It might that a vaccine for the Coronavirus makes you immune only for a year or two. We have a Pole working at our company and he asked us if vaccines are covered through our health provider. He asked because he wanted to a new round of a vaccine against a virus that ticks can spread. Some sort of encephalitis. But only European ticks spread this virus and not North Americans ones. He told us in Europe most people get a shot against this virus every three years.
You see that every virus is different. Sometimes you will only have to get a new round every ten years. Sometimes it's every three years. And sometimes every year, like with influenzua.
Unless you work with small children (like my wife) or take care of the elderly.
This is where your definition is wrong. Non-immunity doesn't equal death.
This is total relevant. Because a Covid vaccine would work like a Hep A or influenza vaccine. You would just need a boost every year, or two or three. Let see what our docs will come up with.