Another story...

Israeli flight attendant in coma after getting measles

https://edition.cnn.com/2019/04/17/h...ant/index.html

The flight attendant, who works for El Al, the Israeli national airline, might have contracted the virus in New York, in Israel or on a flight between the two, Grotto said. Health authorities do not believed that she spread the virus to anyone on the flights.

[snip]Authorities believe that the flight attendant was vaccinated as a child, but the vaccine isn't perfect, and in her case, it didn't work.