Damn

It appears that the blood clotting issues are dire enough that the FDA is limiting the use of the Johnson & Johnson vaccine. 

It's not a big deal for me or Charlie, but for Sharon and Nat, it is, because they have allergies to corn, (maize) which are in, or cannot be certified not to be in, the MRNA vaccines.

They will have to jump through some more hoops:

The Food and Drug Administration imposed new restrictions Thursday on the Johnson & Johnson coronavirus vaccine, saying the risk of a rare and life-threatening blood clot syndrome outweighed the benefits of the vaccine for people who are 18 or older and can get another shot, unless they would otherwise remain unvaccinated.

The FDA said only people who are unable to receive other vaccines because they are not accessible or clinically appropriate, or because individuals refused to get a different vaccine, should receive the Johnson & Johnson shot.

The Johnson & Johnson vaccine has been associated with a rare but potentially deadly blood clotting and bleeding syndrome called thrombosis with thrombocytopenia syndrome, or TTS. The condition usually occurs within one to two weeks of vaccination, and a commonly used treatment to address clotting, heparin, can cause additional harm.

“This is not a new safety signal — it is based on updated information showing that it is a persistent safety signal,” Peter Marks, the FDA’s top vaccine official, said in an interview. He said other, safer vaccines that can be used to inoculate people against the coronavirus.

It looks like it's going to be hard to find a site giving the shot.