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Max Millick's avatar

Learned a lot here! Definitely interesting to learn more about Russia and China's vaccines. Tying back to your previous pieces on China, hoping Biden agrees with you and makes the right call in his foreign policy. It's going to be essential to show leadership here. We have a moral duty to resist Chinese hegemony so long as China is controlled by the CCP, which has proven its willingness to enslave and torture its own citizens, and as we see here, subject foreign populations to hastily-developed vaccines that they don't trust to use on their Han majority.

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WigWag's avatar

Very informative. I think you’re a little too pessimistic about the adenovirus-vector vaccines. We will hear about the J&J vaccine any day now; if it’s effective at one dose it would be the greatest thing since sliced bread. The AZ vaccine is (as of now a two dose vaccine). Sadly, AZ screwed up their Phase III trial so no one really knows what the most efficacious first dose is.

It is true that the adenovirus vector can probably only be given once, but depending on the durability of protection this might not be a problem. If it protects for a decade or more (which is possible but not certain) there’s no need to worry about whether the vector can only be administered once.

Another advantage to the adenovirus vaccines is that long term (or semi long term) safety data is available. While the mRNA vaccines are literally brand new, J&J uses the exact same technology in its Covid vaccine that it uses in its Ebola vaccine. Around 1 million J&J Ebola vaccines have been delivered in Africa with practically no safety issues. The mRNA vaccines are almost certainly safe, but it’s hard to know for sure.

There’s a third vaccine technology that wasn’t mentioned (unless I missed it)-the protein based vaccines. Novavax has one and so does Sanofi (working in partnership with GSK). Basically they provide immunity by exposing the immune system to synthetically manufactured spike protein. These vaccines tend to be weaker so they are paired with chemicals called adjuvants which make the immune system hyper vigilant. The new Shingles vaccine (Shingrix) is this type of vaccine.

Mutation of the virus is something to worry about but not panic about. Most (not all) produce immunity not by priming the immune system to recognize the entire spike protein but by priming the immune system to recognize a part of the spike protein called the receptor binding domain (the part of spike protein which chemically attached itself to the ACE2 receptor found ubiquitously on cells in the human lung, nasal passages and bowel). The receptor binding domain is probably somewhat less likely to mutate.

What regulatory agencies have gotten wrong is the emphasis on development of symptomatic disease as the primary end point in the trials. I think it makes much more sense to focus on whether the vaccines prevent severe disease, hospitalization or death. After all, if the vaccines turn a deadly disease into the sniffles, that would be pretty good.

Claire is right; the United States is ideally suited to vaccinating the world. In fact our country has played the most important role in vaccine development. While Claire can’t bring herself to admit it, the Trump Administration’s Operation Warp Speed was a brilliant and unparalleled success. Most (not Pfizer) companies in the West with the most promising vaccines took warp speed money.

It also pays to remember that the only reason that the world is blessed with a viable and dynamic pharmaceutical and biotech industry is because American patients pay almost all the freight for R&D. Almost every successful pharmaceutical company in the world undertakes the remarkably risky research needed to produce new medicines because most of their profit comes from prices paid by Americans. If Pharma ha to rely on drug prices paid by Europeans, Canadians, Australians and all the nations in Asia, the business would not be profitable enough to justify the risks. In this sense, Claire, Americans are already footing the Bill for almost all Covid vaccine discovery efforts.

Last year, the House of Representatives passed a Bill which would have severely restricted drug prices. Speaker Pelosi was a fierce advocate of the Bill. In the Senate, a less onerous but still destructive Bill was introduced.

This was one case where gridlock proved to be a great thing. Does anyone think we would have gotten Covid vaccines (not to mention new antibody treatments) so rapidly if the Pharmaceutical industry had tens of billions of dollars in reduced revenues?

As for getting shots in the arm, most American States have failed miserably. So have all European nations (with the possible exception of the UK). The only country getting it right is Israel. As of today, Israel is offering vaccines to citizens aged 40 and up. Maybe our leaders should call Benjamin Netanyahu for advice.

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