MMR vaccine
A2CEFR level
20/100Rarity: fairly common
TechnicalRegister
The combined vaccine that protects against measles, mumps and rubella.
The first dose of the MMR vaccine is given at around one year of age.
Rarity runs from 0 (a word everyone knows) to 100 (almost never seen outside specialist or literary writing). Level is the word's real difficulty on the CEFR scale, from A1 to C2.
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