Vaccines still help save lives and keep people from getting sick despite a slight diminishing efficacy over many months.
Sarang Yoon
COVID-19 vaccine effectiveness dips, but remains potent disease deterrent
COVID-19 vaccines as effective in real-world settings as in clinical trials
Salt Lake City data contributed to finding that mRNA COVID-19 vaccines offer substantial protection from infection by SARS-CoV-2 in the real world