Hypothesis - Aliens Have a Biological Weapon - World Leaders Use Covid19-Vaccine to Protect Us.

This just occurred to me while pondering the many strange actions associated with the Covid-19 virus/vaccine, since January 2020.

Is it possible that Aliens have delivered a threat to release something biologically dangerous to humans? Authorities know what it is, and have developed vaccines to combat it, if its used.

Rather than scare the crap out of everyone on the planet, the authorities got together and released the minimally-lethal Covid-19 virus?

Once the threat of Covid-19 was played up and hyped, a (pre-developed) vaccine to the Alien's biological weapon began to be distributed globally.

In which case, those who don't get vaccinated will be the ultimate losers, if the biological weapon is released upon humankind.

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Is the above scenario really that far out?

If 30%-40% of the population continue resisting taking the Covid-19 vaccine, should the major world government leaders hold a major globally broadcast announcement to let us know of the Alien threat?

Would humankind be able to handle it?

Or, should the biological attack potential continue to be kept hidden? When the Aliens release the contagion/virus, 30% of the world's population will die, but 70% will be saved.

-CareWeMust