Volume 7, Number 1—February 2001
Research
Lack of Evidence of Endogenous Avian Leukosis Virus and Endogenous Avian Retrovirus Transmission to Measles Mumps Rubella Vaccine Recipients
Althaf I. Hussain*, Vedapuri Shanmugam*, William M. Switzer*, Shirley X. Tsang*, Aly Fadly†, Donald Thea‡, Rita Helfand*, William J. Bellini*, Thomas M. Folks*, and Walid Heneine*
Table
Western blot antibody reactivity to the p27 gag protein of the endogenous avian leukosis virus (ALV) in vaccine recipients and other reference chicken and human sera
| Sera tested | p27 Positive |
|---|---|
| Chicken sera (n = 61) | |
| ALV infected/antibody positivea | 27/27 |
| ALV uninfected/antibody negativea | 0/34 |
| REVb infected | 0/10 |
| Human sera (n = 68) | |
| Blood donors | 0/60 |
| HIV-1/2b positive | 0/4 |
| HTLV-I/IIb positive | 0/4 |
| MMRb vaccine recipients (n = 206) | |
| 6-12 monthsc | 0/32 |
| 12-30 monthsc | 0/158 |
| 6-12 monthsd | 0/16 |
aantibody reactivity to ALV determined by virus neutralization assays.
bREV = reticuloendotheliosis virus; HIV-1/2 = human immunodeficiency virus type 1 or 2; HTLV-I/II = human T-cell lymphotropic virus type 1 or 2; MMR = measles, mumps and rubella.
csamples collected after first MMR vaccination.
dsamples collected after second MMR vaccination.
