Why are health officials warning about the "potential severity" of measles now?
The alert follows two confirmed measles fatalities in Pennsylvania, the state's first deaths from the virus in decades. Health authorities want to correct the misconception that measles is a harmless rash, emphasizing that it carries severe pulmonary and neurological risks.
What specific complications cause measles to become fatal?
Most fatalities stem from severe viral or secondary bacterial pneumonia, which compromises lung capacity, or acute encephalitis, which causes brain swelling, seizures, and respiratory arrest. The virus also induces immune amnesia, leaving survivors susceptible to other lethal infections for years.
How effective is the MMR vaccine against circulating measles strains?
The standard two-dose MMR regimen remains extraordinarily effective, providing approximately 97% lifetime protection against measles infection. Fully immunized individuals rarely contract the virus, and breakthrough infections, when they do occur, are overwhelmingly mild with virtually no risk of fatal complications.
