https://www.cnn.com/2022/05/25/world/coronavirus-newsletter-intl-05-25-22/index.html
not sure if this the right article but thought this was interesting
Q: Will there ever be a longer-lasting Covid-19 vaccine?
A: Currently, vaccine immunity fades after a few months, with scientists working around the clock to devise new versions to fight the waves of mutations.
The director of the National Institute of Allergy and Infectious Diseases, Dr. Anthony Fauci, told CNN that "some vaccine platforms give a very high degree of protection but the durability isn't very long," because of the constant emergence of new variants.
The mRNA platform -- used in the Moderna and Pfizer/BioNTech vaccines -- makes redesigning the vaccines easier and faster, but we don't know how long their immunity lasts because SARS-CoV-2 changes too frequently.”
We're finally learning more about long Covid - CNN
Vaccines, variants, natural immunity and better treatment options mean catching Covid-19 now isn't the same as it was a year or two ago. But for millions of people who contracted the virus even early in the pandemic, the impact of the disease lingers.
https://www.cnn.com/2022/05/25/world/coronavirus-newsletter-intl-05-25-22/index.html