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Method 1:
Step 1: Identify a target in the genetic code
Step 2: Generate multiple targets
Step 3: Test if this produces a response.
Step 4: see if that confers immunity.Method 2:
Step 1: Find a method of inactivation
Step 2: Inactivate and test
Step 3: see if that confers immunityMethod 3:
Step 1: Find a unique part of virus.
Step 2: Create large amounts of unique part
Step 3: Check for immune response
Step 4: See if that confers immunity.That is a very, very, very, very basic version of events, if everything works and then you have step 5: Is this thing safe?
It is not easy, simple or straightforward. Each step will need repeat revisitation, and any STOP points mean start again at step 1 or 2.
Genuine and probably stupid question, if we have sequenced the virus and have many dead and recovered cases, why does it take so long to produce a vaccine? Is it just the making sure it doesn't kill people part?