A potential treatment for Covid using blood plasma does not reduce deaths among hospital patients, trials show.
The results are a blow to researchers and the NHS, which led the drive to collect plasma donations.
This arm of the Recovery trial, which is investigating a number of promising Covid treatments, has now been closed.
The Oxford researchers involved say they are “incredibly grateful” for the contribution of patients across the country.
Donations of plasma were temporarily suspended, according to NHS Blood and Transplant.**
There had been huge international interest in the role of convalescent plasma as a possible treatment for hospital patients with Covid-19.
Association between COVID-19 outcomes and mask mandates, adherence, and attitudes
Using an event study design, authors estimate the treatment effect of the introduction of mask mandates (shown on the vertical red line) on Z-scored population-normalized COVID-19 daily new confirmed cases, daily new hospitalization admissions proportion, and deaths across all 50 states and D.C. over the time period between February 1 and September 27, 2020.
Source: Dhaval Adjodah, Karthik Dinakar, Matteo Chinazzi, Samuel P. Fraiberger, Alex Pentland, Samantha Bates, Kyle Staller, Alex Vespignani, Deepak L. Bhatt. Association between COVID-19 Outcomes and Mask Mandates, Adherence, and Attitudes.