* Pfizer now says it will ship 50 million doses of coronavirus vaccine by the end of the year
* The firm had planned to ship 100 million doses over the next month
* A spokesperson told the Wall Street Journal that Pfizer will make up the shortfall by shipping more than a billion doses of vaccine in 2021
* UK regulators granted temporary approval to Pfizer's shot on Wednesday and the the US FDA is expected to authorize the jab on December 10
* Moderna, which uses the same new technology for its COVID-19 shot, said it is still on track to deliver
Pfizer and partner BioNTech will only be able to ship half as many doses of its coronavirus vaccine as it promised by the end of the year, cutting its planned global rollout from 100 million to 50 million doses, sources told the Wall Street Journal.
The companies had to walk back its plan due to slowdowns in its supply chain. 'Scaling up the raw material supply chain took longer than expected,' a company spokeswoman told the WSJ.
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Update: Lack of raw materials blamed for slashed supply target of Pfizer's COVID-19 vaccine (CBC/Reuters)
WNU Editor: This is what my brother does. Managing the production of the raw materials necessary for medical products like vaccines. And as he has told me many times in the past. This is not easy to do. Just one small contaminant can ruin a batch that is worth millions of dollars.
