What Is Equivocal Immunity
Persons Who Have Measles-Specific Antibody That Is Detectable by Any Serologic Test Are Considered Immune. Persons with an “Equivocal” Test Result Should Be...
Persons who have measles-specific antibody that is detectable by any serologic test are considered immune. Persons with an “equivocal” test result should be considered susceptible unless they have other evidence of measles immunity (Table_1) or subsequent testing indicates they are immune.
What does an equivocal titer mean?
A titer may be used to prove immunity to disease. A blood sample is taken and tested. If the test is positive (above a particular known value) the individual has immunity. If the test is negative (no immunity) or equivocal (not enough immunity) you need to be vaccinated.
How long does the Covid vaccine last?
People who received the Pfizer-BioNTech or Moderna COVID-19 vaccine for their primary series should get a booster shot at least 6 months after completing the primary series. People who received Johnson & Johnson’s Janssen COVID-19 vaccine should get a booster shot at least 2 months after getting their first shot.