According to a diplomatic note seen by Bloomberg, further delays in the distribution of AstraZeneca's vaccine are possible as the manufacturer remains a problem. In addition, Johnson & Johnson, which is expected to get approval from the European Medicines Agency (EMA) on Thursday, has yet to provide a delivery schedule for its Covid vaccine. 

The diplomatic note also said that the EU member states remain concerned about the production and delivery of the vaccine, and a number of ambassadors called on the EU to strengthen its surveillance of delivery schedules and to keep governments in the loop on efforts to increase production capacity.