4 December 2020 - Pfizer expects to ship half of the COVID-19 vaccines it originally planned for this year because of supply-chain problems, but still expects to roll out more than a billion doses in 2021.

“Scaling up the raw material supply chain took longer than expected,” a company spokeswoman said. “And it’s important to highlight that the outcome of the clinical trial was somewhat later than the initial projection.” Pfizer and Germany-based partner BioNTech had hoped to roll out 100 million vaccines worldwide by the end of this year, a plan that has now been reduced to 50 million.

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