Alberta in Canada is dropping quarantine requirements for close contacts of Covid-19 cases. * Norway postponed for a second time a planned final step in the reopening of its economy from pandemic lockdown. * Zimbabwe has authorised the emergency use of Johnson & Johnson's vaccine. Medical developments* The US Food & Drug Administration extended the shelf life for Johnson & Johnson's vaccine to six months from four-and-a-half months. * Emergent Biosolutions said it would resume production of Johnson & Johnson's vaccine at its troubled Baltimore facility, where operations were stopped in April after millions of doses were found to be contaminated.

Source: News 24 July 29, 2021 09:56 UTC