More good news on vaccine supplies. The Biden Administation is ordering another 100MM doses, each, from both Pfizer/BioNTech and Moderna, which would bring total doses by the end of summer from each to 300MM or 600MM total, which is enough for 300MM people (90% of US and not that many will want to get it). So this means we'll likely have 200MM combined doses for 100MM people by the end of March, then 400MM doses for 200MM people by the end of June and 600MM doses for 300MM people by the end of summer.
This is a reversal of the previous administration passing on additional doses from these two companies, instead relying on J&J/AZ for more doses. I'd rather have the mRNA vaccines at least over the Astra-Zeneca one; don't have data yet on J&J, but I'd also rather have more than I need than not enough, which would allow us to get more people vaccinated in a shorter time (theoretically, if distribution/vaccination could keep up). If we end up having more than we need, the extra doses can be given to other countries.
The administration has also begun using the Defense Production Act to buy more of a special syringe that can extract more doses per vaccine vial (to get to 6 per vial rather than 5, reliably, a 20% increase). It also is prepared to use the law for other raw materials, like lipid nanoparticles and bioreactor bags, if necessary, as the supply chains for these items is a bit fragile.
https://www.nbcnews.com/politics/wh...l-200-million-doses-covid-19-vaccine-n1255744
Also, Moderna confirmed, today, that they will be able to deliver the 100MM doses by end of March, the next 100MM doses by the end of June and likely the 100MM additional doses by the end of summer. Pfizer has already said they'll have their 200MM doses by the end of April rather than end of June, so supply is looking up.
https://investors.modernatx.com/new...a-provides-us-covid-19-vaccine-supply-update/