An 11-month-old baby boy died on Tuesday from complications due to measles, the Health Ministry announced.
The baby was unvaccinated and had no underlying conditions.
"Most of the 11 other [measles-related] deaths were also healthy infants with no underlying conditions who were not vaccinated against the disease," the statement said.
The Health Ministry reiterated that the disease is preventable through the life-saving vaccine.
The statement recommended that all children be vaccinated at one year and again at six, in accordance with the standard vaccination schedule.
However, for areas with outbreaks, the Health Ministry recommended advancing the second dose to age one-and-a-half and administering the vaccine to infants between six and 11 months old.
According to the Health Ministry, the current outbreak zones are located in Jerusalem, Beit Shemesh, Bnei Brak, Harish, Modiin Illit, Nof Hagalil, Kiryat Gat, Ashdod, Safed, Netivot, Haifa, Tiberias, the Mateh Binyamin Regional Council, and Tekoa.
Vaccinations available without an appointment
Parents in these areas can take their children to Tipat Halav and health clinics for vaccination without an appointment.
Stations dedicated to the measles vaccine have even been set up in these areas to make it easier for parents to get their children vaccinated.