Phillips CA, Maeck JV, Rogers WA, Savel H. Intrauterine rubella infection following immunization with rubella vaccine . JAMA 1970;;213:624-5.
Preblud SR, Stetler HC, Frank JA Jr, Greaves WL, Hinman AR, Herrmann KL. Fetal risk associated with rubella vaccine . JAMA 1981;;246:1413-7.
CDC. Rubella vaccination during pregnancy— United States, 1971-1981 . MMWR 1982;;31:477-81.
Bart SW, Stetler HC, Preblud SR, et al. Fetal risk associated with rubella vaccine: an update . Rev Infect Dis 1985;;7(
O'Shea S, Parsons G, Best JM, Banatvala JE, Balfour HH Jr. How well do low levels of rubella antibody protect? (Letter) . Lancet 1981;;2:1284.
Balfour HH Jr, Groth KE, Edelman CK, Amren DP, Best JM, Banatvala JE. Rubella viraemia and antibody responses after rubella vaccination and reimmunisation . Lancet 1981;;1:1078-80.
CDC. Rubella vaccination during pregnancy— United States, 1971-1986 . MMWR 1987;;36:457-61.
CDC. Rubella vaccination during pregnancy— United States, 1971-1985 . MMWR 1986;;35:275-6,281-4,315.
Sheppard S, Smithells RW, Dickson A, Holzel H. Rubella vaccination and pregnancy: preliminary report of a national survey . Br Med J (Clin Res) 1986;;292:727.
Enders G. Rubella antibody titers in vaccinated and nonvaccinated women and results of vaccination during pregnancy . Rev Infect Dis 1985;;7(
Miller E, Cradock-Watson JE, Pollock TM. Consequences of confirmed maternal rubella at successive stages of pregnancy . Lancet 982;
CDC. Congenital malformations surveillance report: January 1981-December 1983 . Atlanta: US Department of Health and Human Services, Public Health Service, 1985;.
ACIP. Rubella prevention . MMWR 1984;; 33:301-10,315-8.
Women who had had negative serologic tests for rubella within 1 year before vaccination were considered susceptible at vaccination.
Since July 1985, the CDC laboratory has tested for rubella-specific IgM antibody using an indirect enzyme immunosorbent assay (EIA) with an enzyme-conjugated antihuman IgM serum. An IgM index is calculated for each serum specimen using a known low-positive IgM serum specimen as a reference standard. An IgM index greater than or equal to 1.0 is considered positive, with increasing values indicating increasing antibody levels. Before July 1985, the CDC laboratory performed sucrose density gradient centrifugation and hemagglutination-inhibition (HI) tests for rubella- specific IgM.
Persons are considered succeptible unless they can present documentation of laboratory evidence of immunity and/or documentation of adequate immunizationrubella vaccine on or after their first birthdbirthday.13