Giving booster vaccinations to millions of people in wealthy countries will slow the vaccination of the rest of the world.

The main cause of this problem is that each kind of vaccine is a monopoly and that the manufacture of the best vaccines is being artificially held back. It is surely no coincidence that the vaccine companies are taking advantage or raise prices because charging more is the whole point.

Using more doses for people vaccinated people, aside from special cases, would exacerbate this effect.

The one factor that might override this is if a third dose will make it almost impossible for a vaccinated person to contract Covid-19. If so, the third dose might be necessary for a country to become Covid-free and thus protect its unvaccinatable population.

I do not use the word "jab" to refer to an injection. To me, "jab" means a kind of attack.

* Analysts and experts are warning of many years of instability across Africa, possibly leading to wars and political upheavals, as the economic impact of the Covid-19 pandemic deepens across the continent.*

Other likely causes of instability in Africa include climate breakdown, Islamist guerrilla movements, and in some places population growth. They all work together.

*WHO seeks to take political heat out of [SARS-COV-2] virus origins debate.*

I am in favor of this. To determine the origin of the virus will be useful for science, and may teach us some important precautions for future research, but it surely won't inculpate any government of anything worse than a mistake.

US citizens: call on Biden to fire DeJoy now.

US citizens: call on Zuckerberg to allow the NYU Ad Observer team to study Facebook once again.

Meanwhile, as always, don't be a zucker — don't be a used of Facebook.