It's obvious we need booster vaccinations. But not another intramuscular that only seeps in serum IgG antibodies into the lower lungs. The levels of antibodies in the upper respiratory mucosa are never very high and drop rapidly. Viral infection of the mucosa and shedding still occurs. We need operation warp speed type money for funding the two good intranasal sars-cov-2 vaccine trials going on right now and to start…
It is not obvious we need booster vaccinations. There's simply not enough data yet to call this "obvious". Even "likely" is a stretch. Time will tell how long effective immunity lasts, but we absolutely do not know that number yet. EDIT: To be fair, it is at least likely that high-risk individuals may need boosters. Israel is already distributing them. But the idea that we will need an annual COVID shot, or that most…
I am not in any way saying the intramuscular do not protect the internal body tissues against variants. I am saying that it's important to protect against mucosa infection too to prevent spread and that requires intranasal vaccination.