A researcher prepares milk samples in Sabeti Lab, which is testing purchased milk at area grocery stores for the presence of bird flu.
David L. Ryan/The Boston Globe via Getty Images
- Vaccine makers' stocks surged on Tuesday after the US reported its first bird flu death.
- Moderna, Novavax, and CureVac saw double-digit gains, while Pfizer and GSK also rose.
- The drugmakers have previously reported plans to develop mRNA vaccines to treat the virus.
Shares of vaccine...