Hmm..wouldn't a potential vaccine(even with limited efficacy) be counterproductive then in people with healthy immune systems? Vaccines put white blood cells in a dormant state because they don't have to be activated to fight off infections so a belated T cell response with unknown virus(like covid) might lead to much unnecessary damage or even death.
I'm not totally sure what you mean, so forgive me if this isn't where you were going. I can only explain it as I know of it. There are lots of white blood cells with differing functions. The main three in simpilified form are:
1)
Macrophages, which engulf and destroy pathogens, leaving behind antigens which are picked up by...
2) ...
B-cells, which produce antibodies to those pathogens for an antibody-mediated response
3)
T-cells which recognise pathattack infected cells (although there are quite a few subvarieties with specialised functions) as a cellular response.
However, all three interact with each other to some degree, and enhance the activity of the others in response to infection.
A vaccine should promote a short-lived immune response. Some of the B- and T-cells are "memory" cells that retain information on prior infections, and can be much more quickly ramp up into action upon re-infection to deliver a faster response.
Naturally, if there is some sort of infection of any sort, production of immune cells should increase, and a generalised heightened immune response against one infection may help combat another in the affected area. However, it doesn't really follow as I understand it that a vaccine would suppress the immune system below a normal baseline - there are an awful lot of infections out there to keep things ticking over.
No one ever planned for this for the long term which I always found dumb strategy.
To an extent, yes. The plan was generally containment, starve the infection of new hosts quickly whilst it's small. It does appear evident that there was a lack of planning about what to do if this containment failed, which occurred with plentiful government incompetence in numerous countries. Hopefully, should have learnt for next time.
Masks do very little if anything outside a medical setting to stop spread. Might be even counterproductive the way I see some people use a mask. Going for a walk the other day I saw a bloke at a bus station leaning on a railing and then with the same hands removing the mask to grab a smoke and then puffing it out in the mask. LOL xD
No, studies suggest masks can be useful. Not a total game changer, but enough to reduce risk to oneself and (if infected) others to be worthwhile. One can imagine it a bit like taking drugs to prevent further cardiovascular events after myocardial infarction. Individually none of them make a vital difference, but take three or more of them and the cumulative effect affords a substantial protection.