BACKGROUND: Given the high infant measles mortality rate, there is interest in whether a measles immunization regimen beginning at <12 months of age provides lasting immunity. METHODS: Measles-specific immune responses were evaluated in 70 children aged 5-10 years after primary measles vaccine administered at 6, 9, or 12 months. RESULTS: At 5-10 years of age, the stimulation index for measles T-cell proliferation was 11.4 (SE, 1.3), 10.9 (SE, 1.5), and 14.4 (SE 2.1) when the first measles dose was given at 6, 9, or 12 months, respectively. Neutralizing antibody concentration (geometric mean titer [GMT]) in those immunized at 6 months of age was 125 mIU/mL (95% confidence interval [CI], 42-377) in the presence of passive antibodies (PAs) and 335 mIU/mL (95% CI, 211-531) in those without PAs; in those immunized at 9 months, GMTs were 186 mIU/mL (95% CI, 103-335) and 1080 mIU/mL (95% CI, 642-1827) in the presence and absence of PAs, respectively. The GMT was 707 mIU/mL (95% CI, 456-1095) when vaccine was administered at 12 months (P ≤ .04). CONCLUSIONS: Measles-specific T-cell responses were sustained at 5-10 years of age regardless of age at time of primary measles immunization. Neutralizing antibody concentrations were lower in cohorts given the first vaccine dose at 6 months of age and in the presence of PAs; however, responses could be boosted by subsequent doses. Starting measles vaccination at <12 months of age may be beneficial during measles outbreaks or in endemic areas.
BACKGROUND: Given the high infant measles mortality rate, there is interest in whether a measles immunization regimen beginning at <12 months of age provides lasting immunity. METHODS: Measles-specific immune responses were evaluated in 70 children aged 5-10 years after primary measles vaccine administered at 6, 9, or 12 months. RESULTS: At 5-10 years of age, the stimulation index for measles T-cell proliferation was 11.4 (SE, 1.3), 10.9 (SE, 1.5), and 14.4 (SE 2.1) when the first measles dose was given at 6, 9, or 12 months, respectively. Neutralizing antibody concentration (geometric mean titer [GMT]) in those immunized at 6 months of age was 125 mIU/mL (95% confidence interval [CI], 42-377) in the presence of passive antibodies (PAs) and 335 mIU/mL (95% CI, 211-531) in those without PAs; in those immunized at 9 months, GMTs were 186 mIU/mL (95% CI, 103-335) and 1080 mIU/mL (95% CI, 642-1827) in the presence and absence of PAs, respectively. The GMT was 707 mIU/mL (95% CI, 456-1095) when vaccine was administered at 12 months (P ≤ .04). CONCLUSIONS: Measles-specific T-cell responses were sustained at 5-10 years of age regardless of age at time of primary measles immunization. Neutralizing antibody concentrations were lower in cohorts given the first vaccine dose at 6 months of age and in the presence of PAs; however, responses could be boosted by subsequent doses. Starting measles vaccination at <12 months of age may be beneficial during measles outbreaks or in endemic areas.
Authors: C A Siegrist; C Barrios; X Martinez; C Brandt; M Berney; M Córdova; J Kovarik; P H Lambert Journal: Eur J Immunol Date: 1998-12 Impact factor: 5.532
Authors: T L Gustafson; A W Lievens; P A Brunell; R G Moellenberg; C M Buttery; L M Sehulster Journal: N Engl J Med Date: 1987-03-26 Impact factor: 91.245
Authors: C Panpitpat; U Thisyakorn; T Chotpitayasunondh; E Fürer; J U Que; T Hasler; S J Cryz Journal: Bull World Health Organ Date: 2000 Impact factor: 9.408
Authors: Sallie R Permar; Sherry A Klumpp; Keith G Mansfield; Woong-Ki Kim; Darci A Gorgone; Michelle A Lifton; Kenneth C Williams; Jörn E Schmitz; Keith A Reimann; Michael K Axthelm; Fernando P Polack; Diane E Griffin; Norman L Letvin Journal: J Virol Date: 2003-04 Impact factor: 5.103
Authors: Li Liu; Hope L Johnson; Simon Cousens; Jamie Perin; Susana Scott; Joy E Lawn; Igor Rudan; Harry Campbell; Richard Cibulskis; Mengying Li; Colin Mathers; Robert E Black Journal: Lancet Date: 2012-05-11 Impact factor: 79.321
Authors: Wen-Hsuan W Lin; Eileen Moran; Robert J Adams; Robert E Sievers; Debra Hauer; Steven Godin; Diane E Griffin Journal: Sci Transl Med Date: 2020-04-01 Impact factor: 17.956
Authors: Laura M Nic Lochlainn; Brechje de Gier; Nicoline van der Maas; Rob van Binnendijk; Peter M Strebel; Tracey Goodman; Hester E de Melker; William J Moss; Susan J M Hahné Journal: Lancet Infect Dis Date: 2019-09-20 Impact factor: 25.071
Authors: Laura M Nic Lochlainn; Brechje de Gier; Nicoline van der Maas; Peter M Strebel; Tracey Goodman; Rob S van Binnendijk; Hester E de Melker; Susan J M Hahné Journal: Lancet Infect Dis Date: 2019-09-20 Impact factor: 25.071