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Janet Yellen joined Twitter! And Senator Grassley, Republican and outgoing Senate Finance Chair, said that the committe needs to see her tax returns before he can make up his mind on her nomination to Treasury Secretary. All it takes is the prospect of a Democratic President for the GOP to care about tax returns. Too funny...

Speaking of finance, I was thinking about the cost of Covid-19 vaccine. The vaccine shots themselves range between $3 and $37 per dose, with all the vaccines requiring two doses, but then you have to take into account the infrastructure needed to accomodate the vaccines (refrigeration at facilities, during transportation, data management, vaccination marketing campaign, etc.), plus one must also not forget training medical personnel.

There are also logistic considerations regarding timing. According to an NPR piece interviewing Angie Rasmussen, a virologist, some people feel really bad after taking the vaccine: not just a sore muscle where it was administered, but also feeling physically ill and not able to lead a normal life immediately and that happens after each dose.

So, what are the implications for vaccinating medical personnel, for example? You can't have all your nurses/doctors take the shot at the same time and risk many of them not being able to function for a few days simultaneously. There has to be a plan of staggering administration to people. Then, you also have to make sure that the side effects of the vaccine after the first dose do not discourage people from getting the second one.

It will be interesting to see how each country organizes and manages the vaccination process.