Pennsylvania’s measles outbreak has reached 1,286 cases, with five confirmed deaths, making it the state’s largest outbreak in decades and a national warning about what happens when vaccination falters.
Of the 1,286 people sickened as of October 19, only four were vaccinated, according to epidemiologist Katelyn Jetelina’s tracking. The numbers are a stark demonstration of the vaccine’s protective power, and of the vulnerability of the unvaccinated.
Health care providers administered more than 56,000 MMR doses in September, more than twice the usual monthly total, as the outbreak spurred a vaccination surge. A CDC “disease detective” has arrived through the Epi-Aid program to assess the outbreak.
The human cost
Five deaths, with a possible sixth under review under new state criteria, represent a toll not seen in generations. Measles was declared eliminated in the United States in 2000; its return as a killer is a public health failure.
The outbreak has also produced the state’s first congenital measles cases in decades. Nigeria’s Ebola confirmation shows how outbreaks test health systems, and the virus is reaching the most vulnerable.
What the data shows
Bangladesh’s measles toll shows this is a global pattern. But Pennsylvania’s data is clear: vaccination works, and its absence kills. This epidemiological update has the full picture.
1,286 cases. Five deaths. Four vaccinated. The math is not complicated.
