Univerzity Stanford aj Harvard odporúčajú ľuďom ktorí bývajú v campusoch očkovanie proti covidu:
Does Stanford University require a COVID vaccine? It also lists other immunizations that are recommended for your well-being on campus. * Covid-19 vaccination is not currently required, but the status could change at any time.
Does Harvard still require the COVID vaccine? The COVID-19 vaccine is strongly encouraged, but not required, for all students, faculty, staff, and researchers.


