Honest question, not intended to be a leading question....
Influenza is caused by a virus. We have grown the virus for many years and killed it to be included in flu vaccines. Why can we not do the same for the China variant of the corona virus? Is there a structural or chemical or other reason why we are unable to replicate our previous "successes" and must look for a new approach? Not looking here for the routine answers - big pharma profits, Bill Gates conspiracy, NWO control, etc. Looking for a legitimate bio/med explanation.
I am not a "bio/med" person in the sense I think you are looking, but I have studied vaccine medicine for 15 years. First off, they don't "kill" a flu virus or any virus, they supposedly make it less "active" you can't have a fully dead virus and expect your body to recognize a real one. That in itself is truly complicated and why they use adjuvants to create an immune response in the body.
However it doesn't just create a response to whatever virus they have included but also whatever other proteins etc are in the vaccine itself, hence why we now have millions of people allergic to certain foods (especially peanuts) because certain types of proteins are used in different vaccine that your body then also starts to attack.
If you read the CDC data on the flu vaccine, they have only ever admitted ANY flu vaccine has ever been up to 16% effective. This is because there are MANY variants of the flu/cold etc which are also "coronaviruses". Plus after a virus comes out it tends to mutate very quickly. Some doctors I have listened to say its completely impossible to create a vaccine for any coronavirus; and I happen to agree with that based on my knowledge of how vaccines work.
When they create a flu vaccine they literally guess which variants will be out that year and go with those; and what happens every year? thousands of people get the flu; many die, many live. Its the same every year.
In reality, vaccines simply don't work. We have been programmed to believe they do but they simple don't. This subject truly would take years upon years to learn about and I hope what I said makes, sense if you have questions please feel free to ask and i'll try to explain as best I can.
Don't be fooled by doctor's and/or nurses either, most of them do not even know vaccines don't actually work because they are taught by the people selling them and they do not go to extra mile to actually research them and learn about them. Most don't even know there is a 1986 law protecting vaccine manufacturers from liability, they don't know VAERS exists, they don't know there is a vaccine court etc. They won't even admit when something is a vaccine reaction or adverse event. Its truly sickening the world we live in.