Stunning developments today in relation to the adenovirus vaccines now being marketed for Covid-19, including AstraZeneca’s Vaxevria, and the Johnson and Johnson Covid-19 vaccine. Are adenovirus vaccines now finished?

• The EU Commission has decided not to renew COVID-19 vaccine contracts with AstraZeneca and Johnson & Johnson – Reuters
• AstraZeneca vaccine: Denmark stops rollout completely – BBC report
  
• EMA to provide further context on risk of very rare blood clots with low blood platelets – EMA
  
• U.S. FDA to scrutinize vaccine design behind COVID-19 shots linked to blood clot – Reuters
  

Our opinion: The writing is on the wall for adenovirus vaccines as far as the Sars-cov-2 pandemic is concerned