In an interview with STAT news, vaccine experts expressed concern that Moderna had not published data actually showing how effective its Covid-19 vaccine was at generating an immune response.

The experts also noted that the NIAID, which had carried out the Phase I study of mRNA-1273, had been silent about the data news.

They also expressed concern that Moderna doesn’t publish its findings in scientific journals, instead relying on press releases, meaning there is little way to fully understand how effective their vaccine approach has been in other diseases, as well as in Covid-19.

Moderna responded to inquiries from STAT saying full results will be published in a journal article by NIAID, so the world will have to sit tight and wait to see the actual extent of the promise of this vaccine.