This discussion is reminiscent of our standard firearm conversation. We regularly demonstrate that handguns are poor choices for shooting things, have only convenience to recommend them, and are never the firearm of choice for someone who knows that they will need a firearm-in which case, the firearm of choice is the largest caliber, highest capacity, fastest cyclic rate, longest range firearm that is readily accessible: a Barrett .50 BMG, 12 gauge pump, or 20mm chain gun. No one has suggested tactical nukes as yet, although chemical/biological weapons have been explored.
At the end, everyone agrees that a handgun is a good thing to have in the kit; no one agrees on which one is best but the .22 rimfire semi-automatic is generally agreed to be useful.
So it is with antibiotics: nothing is good for everything, reasonable choices exist if the threat can be specifically identified, and convenience of carry tends to rule. Z-packs provide 10 days of therapy in a 5 pill package, cover a wide range of skin and respiratory bacteria, and are relatively cheap-the Ruger Mark II of antibiotics, if you will.
Opportunistic bacterial infection following viral infection is primarily a problem in the very old, the very young, and the immune compromised patients. Hygiene and prevention are important, but the best defense is to avoid being very old, very young or immune-compromised.
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Dance like you have never been hurt, work like no one is watching,love like you don't need the money.