they became obsolete quicker than anybody would've imagined....
and in 2 months, they'll have the omicron variant vaccine ready and omicron will be long gone....can't wait to hear the sales pitch on that![]()
Covid seems to be evolving fairly quickly, like other coronaviruses. Which means the mRNA vaccines could be handy as they allow for (comparatively) rapid updates, but we'll likely always fall behind the curve.
For anyone who's interested, the following Nature article discusses the possible evolution and future of Covid. It's a month or so old now but still worth a read:

Beyond Omicron: what’s next for COVID’s viral evolution
The rapid spread of new variants offers clues to how SARS-CoV-2 is adapting and how the pandemic will play out over the next several months.