If H3N2 viruses continue to circulate prominently, the 2014-2015 influenza season could be severe. In addition, most of the H3N2 viruses that have been antigenically or genetically characterized at CDC are different or drifted from the H3N2 vaccine virus.
Updated April 12, 2017. An indefinite pronoun is a pronoun that refers to an unspecified or unidentified person or thing. Put another way, an indefinite pronoun doesn't have an antecedent.
Indefinite Pronouns. Indefinite pronouns, like collective nouns, can be singular or plural, depending on how they are used in a sentence. Singular indefinite pronouns take a singular verb; plural indefinite pronouns take a plural verb. Here are some guidelines to follow: 1  Indefinite pronouns that end in-one are always singular. 2  These words include anyone, everyone, someone, and one. 3  Indefinite pronouns that end in-body are always singular.