I believe there'll be a fourth wave, but perhaps more regionally. The 1918 influenza pandemic lasted from Feb '18 till April '20. We're just a year into this one.
Way too many stupid people in this country. Starting with governors. Then with vaccine deniers. I'm embarrassed to say that up to a third of healthcare workers are refusing the vaccine, including hospital employees and home care workers. Plus, we have all the new, more virulent variants.
I suspect we'll be needing "booster" vaccines for years to come.
We'll shortly have a surplus of vaccines. Will he help less fortunate countries???