WORLDUS Advisers Endorse Single-Shot Covid-19 Vaccine from J&JNileshFebruary 27, 2021February 27, 2021 by NileshFebruary 27, 2021February 27, 202101088 US health advisers endorsed a one-dose COVID-19 vaccine from Johnson & Johnson on Friday, putting the nation on the cusp of adding an easier-to-use option to fight the pandemic....