Astra Zeneka will conduct additional tests on the vaccine

The British company Astra Zeneca will conduct additional tests around the world to evaluate the effectiveness of the vaccine, the CEO of the company, Pascal Sorio, announced today, as reported by Reuters citing the Bloomberg agency.

Instead of transferring the tests to the US, where the Pfizer and Moderna vaccine tests are nearing the end and production has begun, the new tests will determine whether smaller doses of the vaccine work better than larger ones, the text states.

Astra Zeneca, which is working on the new vaccine with the University of Oxford, is facing uncomfortable questions about the vaccine's effectiveness, which is why experts say it could slow down the eventual speed of approval for the use of the vaccine in the US and the EU, writes Tanjug.