The world has had it with lockdowns at just the wrong moment. Covid is spreading faster than ever even as political leaders back off restrictions designed to curb it.  Dr. David Nabarro, Special Envoy of the World Health Organization on Covid-19, warns that the next six months will be rough. “We are in the middle of a really difficult pandemic and we are nowhere near the end of it,” he said. Vaccines alone cannot stop the pandemic. There is not enough supply and, in any case, the vaccines are better at preventing severe illness than at stopping transmission of the virus. He warns that measures of hospitalization and death miss the serious “Long Covid” afflicting many younger patients. Dr. Nabarro discusses effective public health measures with public health experts in Botswana and Canada.  This episode is sponsored by the Royal Academy of Engineering’s Leaders in Innovation Fellowships. Dr. Jo-Ann Passmore of the University of Capetown Medical School describes her innovation, GIFT, which measures inflammation as a simple test for sexually transmitted diseases.