Bivek Singh, Pathiyil Ravi Shankar
"Knowledge regarding cardiopulmonary resuscitation among health assistants in Nepal: A cross-sectional study"
PloS one
france blood donations tested pools 96 samples parvovirus b19 b19v dna discard plasma fractionation contains high viral loads january 2015 march 2024 b19vpositive donations decreased covid19 pandemic followed strong rebound 2023 unusually high circulation winter 202324 ca 10 times higher december 2023march 2024 vs prepandemic period variations time probably related measures implemented limit sarscov2 spread