单词	monovalent
释义	monovalent adjective mono·​va·​lent ˌmä-nə-ˈvā-lənt  1 : having a valence of one 2 : having specific immunologic activity against a single antigen, microorganism, or disease a monovalent vaccine Example Sentences Recent Examples on the Web The conventional shots are monovalent vaccines, intended to protect only against the original coronavirus strain. Los Angeles Times, 7 Sep. 2022 Or, people can take it two months after a monovalent booster of either the Pfizer or Moderna vaccines. oregonlive, 2 Sep. 2022 The committee was not asked to vote on what sublineage to include or whether the booster should be monovalent vaccine or a bivalent vaccine, which would include two strains. Jen Christensen, CNN, 30 June 2022 Marks seemed to indicate there may be an interest in using a monovalent Omicron vaccine as a primary series. Helen Branswell, STAT, 28 June 2022 Although the level of antibodies was lower than with a monovalent vaccine, the breadth of coverage was greater. Laura Defrancesco, Scientific American, 6 Jan. 2022 Moderna also said that the National Institute of Allergy and Infectious Diseases (NIAID) would conduct a Phase 1 clinical trial to study both the monovalent and multivalent versions of mRNA-1273 vaccines. Chris Smith, BGR, 12 Mar. 2021 The plan was to snuff out the few type 2 outbreaks that would inevitably emerge from the last use of trivalent vaccine with a limited, emergency stockpile of a vaccine effective against just type 2, known as monovalent OPV2 (mOPV2). Leslie Roberts, Science | AAAS, 10 Nov. 2020 See More Word History Etymology International Scientific Vocabulary First Known Use 1871, in the meaning defined at sense 1 Medical Definition monovalent adjective mono·​va·​lent ˌmän-ə-ˈvā-lənt  1 : having a chemical valence of one 2 : containing antibodies specific for or antigens of a single strain of a microorganism a monovalent vaccine
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