The company's review covered more than 17 million people vaccinated in the United Kingdom and European Union, and comes amid a flurry of suspensions over alleged clotting issues.

Authorities in a number of countries, including Ireland, Austria and the Netherlands, have suspended the vaccine.

In a statement, the company said AstraZeneca has shown no evidence of an increased risk of pulmonary embolism, deep vein thrombosis or thrombosis subpoena in any defined age group, gender batch or in any particular country, the drugmaker added 37 blood related incidents have been reported so far, which it says is similar across other licensed covid 19 vaccines.

The company plans to publish the monthly safety report on the European Medicines Agency website within the next week.

AstraZeneca's vaccine, developed with Oxford University, has been authorized for use in the European Union and other countries, but not yet in the United States.