Democide, first mandate the lethal injections and then label damaged immune system adverse reactions "flu".
"...If a state or jurisdiction exceeds its ability to care for patients, a team from the National Disaster Medical System may be deployed, she said, adding that response might also include personnel from the Department of Defense and the Federal Emergency Management Agency, or FEMA..."
https://finance.yahoo.com/news/u-officially-flu-epidemic-federal-165009925.html