In 2016 the CDC recommended that LAIV not be used for the 2016-2017 flu season and instead another type of influenza vaccine be used. This is due to the poor effectiveness of this type of vaccine between 2013 and 2016 with it being non effective during the 2015-2016 season.
A determiner is a word that modifies a noun or a noun phrase. Thatâs also the definition of adjective, but although both parts of speech modify nouns, determiners are distinct from adjectives in several respects, most obviously in that the latter express attributes, whereas determiners express relationship.
An important role in English grammar is played by determiners â words or phrases that precede a noun or noun phrase and serve to express its reference in the context.he following is a rough classification of determiners used in English, including both words and phrases: 1  Definite determiners, which imply that the referent of the resulting noun phrase is defined specifically: 2  The definite article the.