TWiV reviews pause in the use of Chikungunya vaccine, HHS to stop recommending COVID shots for pregnant women and children, molecular basis for shifted receptor recognition by an encephalitic alphavirus, and evolution of koala retrovirus…

The League of Extraordinary Virologists celebrate the eradication of wild poliovirus type 3, and consider the effectiveness of an influenza vaccine produced in insect cells, and how small RNAs are protecting the Koala germline from retroviral invasion.