18.3.

The Radboud university medical center in Nijmegen and the UMC Utrecht are going to carry out a test in which five hundred employees will receive a vaccination against tuberculosis on the assumption that this will offer them better protection against the coronavirus, the two hospitals report on Wednesday morning.
https://www.nu.nl/coronavirus/6038365/ziekenhuizen-doen-proef-met-tbc-vaccin-als-bescherming-tegen-corona.html