A 30-Year-Old Flu Shot Still Works Today With One Big Problem

A 30-year-old flu vaccine still fights some modern viruses—but leaves a critical weakness exposed. Researchers have uncovered new insights into how long flu vaccine protection can last by revisiting blood samples from people vaccinated in 1994. By examining these preserved samples, scientists found that the immune response triggered by that vaccine could still recognize and [...]

from SciTechDaily https://ift.tt/qoL8V57