Single Institution, Bilateral, and Multilateral Collabortation Patterns (Institution Level) Area

Institutional collaboration modes for COVID-19 research. This graph is not cumulative. Papers are grouped by the week commencing on the dates given; the final week is incomplete. Publications counting toward ``single institution'' have only a single institutional affiliation, bilateral publications are affiliated with two institutions, and multilateral publications are those that are affiliated with more than two institutions. There is no sensitivity in this plot to the country in which institutions are situated.