- UK chief medical officers defend delay of second Pfizer Covid-19 vaccine doses CNN
- Pfizer Criticizes Sudden Change in Coronavirus Vaccine Dosing Regime in the U.K. The Motley Fool
- Covid vaccine shortages: Could delaying a 2nd dose be the answer? | DW News DW News
- Every one must take the Covid vaccine | Op-eds – Gulf News Gulf News
- BioNTech warns of vaccine supply gaps Reuters
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