Our shots are good for about year but 3 to 5 varient vaccines should be developed. Currently a 4th wave is growing in the US. We don't know the full impact of varient spread . Dr. Brilliant who cured smallpox says the globe will never reach herd immunity and will chase varients ad infinitum. The UK varient is now found to be more severe. All in all bad news but even a small feeling of reprieve is being enjoyed with the return of the sun.