I have been getting the “Flublok” influenza vaccine for 2 of the last 3 years.
It is a recombinant dna vaccine made from the cells of the corn borer caterpillar.
No eggs involved in making it. No egg allergy reactions.
$60 cash price at Walmart.

The one year I skipped getting it I got the Flu while at a wedding in New Orleans.

https://clinicaltrials.gov/ct2/show/NCT03694392

So far it appears more effective than the old fashioned egg vaccines.

The US gov gave a special grant to create Flublok and another dna vaccine because they can be made much faster than the 100 year old egg way, and the strain of virus does not “drift” from a “grows good in humans” virus to a grows good in chickens virus strain.

I suspect that Flublock will have a COVID-19 vaccine 60 days after they find out which piece of DNA creates effective human antibodies.

Learn about where the nerves are in your deltoid muscle.
Before you get your shot draw a little circle where you insist they should stick the needle straight in at a right angle.
If they hit the nerve your shoulder will be sore for a long time.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6347325/pdf/0650040.pdf

After getting your shot go for a long tiring walk that will stimulate your immune system.

If you are unlucky and catch Influenza and COVID-19 at the same time the duo team of viruses has an even greater chance of killing you. Same thing with RSV virus or Noro virus.

I will go out on a limb and guess that somewhere there is a beneficial virus - one that if you had it at the same time as coronavirus it would help keep you alive.