BA.5 is taking hold. So where is the Omicron vaccine?

The BA.4 and BA.5 sub-variants of Omicron are leading to a concerning jump in infections here and around the world. That's partly because while current vaccines are preventing death and hospitalisation, they're no longer as effective at stopping COVID-19 from spreading. Today, US virologist Jeremy Kamil on when Omicron-specific vaccines will be ready, and which nations will get them first. Featured: Dr Jeremy Kamil, associate professor of microbiology and immunology, Louisiana State University, Shreveport, Louisiana, US