A less than 6 month immunization period (if even THAT) is NOT a proper vaccine let alone something that can save the herd unless you can somehow manage to get everybody injected once every 5 months.
this is nothing more than irrational, illogical, emotional thinking - What we’re doing isn’t working... do it more often!
2 months for J&J.
Just how long can people go, getting “boosters” every 6 months before their immune systems are so desensitized that they fail to respond to normal events? Eventually a common cold or scratch is going to generate an infection that kills, because the immune system is burned out.
the flu vaccine has a waning 6 month protection window, so does the ebola vaccine:
Intraseason waning of influenza vaccine protection:
https://pubmed.ncbi.nlm.nih.gov/28039340/
https://www.cdc.gov/vhf/ebola/clinicians/vaccine/index.html
IOW, SOP for the left.