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Active immunity
- ... you have a recent, or past infection, or immunity to hepatitis A Hepatitis B test results: Hepatitis B surface antigen (HBsAg): you have an active hepatitis B infection, either recent or chronic (long- ...
- ... vaccine or Tdap vaccine is used to maintain immunity in people age 7 and older. Tdap vaccine ...
- ... HD. Laboratory evaluation of immunoglobulin function and humoral immunity. In: McPherson RA, Pincus MR, eds. Henry's Clinical ...
- ... from COVID-19 To check the level of immunity within a population and estimate vaccine coverage ... may need a diagnostic test to confirm an active infection with SARS-CoV-2. You should stay ...