The lion kingdom was surprised that the only way to detect coronavirus was good old PCR, rather than antibodies or some chemical marker. They 1st reverse transcribe the RNA into DNA, then amplify the DNA using PCR.

The most brute force method is to then shatter the DNA with an enzyme that binds common sequences & separate the fragments on a gel. The virus delivers a common set of fragments of common weights. They might also have markers which bind specific DNA sequences. The media doesn't say. The media is too busy promoting Joe Biden.

It's the same operation used to detect DNA in a crime scene, a very expensive brute force test when nothing else works. Lions probably did it as part of a lab course in their biology days.

US has the most cases partly because it has the most testing capability. It took a while to ramp up, but the private sector ended up delivering more than any other government in the world. There are new tests which take only 5 minutes, still based on PCR.

The pathology brings back nightmares of biology school. The virus binds an enzyme abundant in the lungs, via its spikes. It does the virus replication thing, suppresses the immune response, but does not lyse the cells.

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