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Concomitant or sequential administration of live attenuated Japanese encephalitis chimeric virus vaccine and yellow fever 17D vaccine: randomized double-blind phase II evaluation of safety and immunogenicity.
Hum Vaccin. 2010 Nov; 6(11):906-14.HV

Abstract

A randomized, double-blind, study was conducted to evaluate the safety, tolerability and immunogenicity of a live attenuated Japanese encephalitis chimeric virus vaccine (JE-CV) co-administered with live attenuated yellow fever vaccine (YF-17D strain; Stamaril®, Sanofi Pasteur) or administered successively. Participants (n = 108) were randomized to receive: YF followed by JE-CV 30 days later, JE followed by YF 30 days later, or the co-administration of JE and YF followed or preceded by placebo 30 days later or earlier. Placebo was used in a double-dummy fashion to ensure masking. Neutralizing antibody titers against JE-CV, YF-17D and selected wild-type JE strains was determined using a 50% serum-dilution plaque reduction neutralization test. Seroconversion was defined as the appearance of a neutralizing antibody titer above the assay cut-off post-immunization when not present pre-injection at day 0, or a least a four-fold rise in neutralizing antibody titer measured before the pre-injection day 0 and later post vaccination samples. There were no serious adverse events. Most adverse events (AEs) after JE vaccination were mild to moderate in intensity, and similar to those reported following YF vaccination. Seroconversion to JE-CV was 100% and 91% in the JE/YF and YF/JE sequential vaccination groups, respectively, compared with 96% in the co-administration group. All participants seroconverted to YF vaccine and retained neutralizing titers above the assay cut-off at month six. Neutralizing antibodies against JE vaccine were detected in 82-100% of participants at month six. These results suggest that both vaccines may be successfully co-administered simultaneously or 30 days apart.

Authors+Show Affiliations

Australian Army Malaria Institute, Queensland, Australia.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Randomized Controlled Trial
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

20864814

Citation

Nasveld, Peter E., et al. "Concomitant or Sequential Administration of Live Attenuated Japanese Encephalitis Chimeric Virus Vaccine and Yellow Fever 17D Vaccine: Randomized Double-blind Phase II Evaluation of Safety and Immunogenicity." Human Vaccines, vol. 6, no. 11, 2010, pp. 906-14.
Nasveld PE, Marjason J, Bennett S, et al. Concomitant or sequential administration of live attenuated Japanese encephalitis chimeric virus vaccine and yellow fever 17D vaccine: randomized double-blind phase II evaluation of safety and immunogenicity. Hum Vaccin. 2010;6(11):906-14.
Nasveld, P. E., Marjason, J., Bennett, S., Aaskov, J., Elliott, S., McCarthy, K., Kanesa-Thasan, N., Feroldi, E., & Reid, M. (2010). Concomitant or sequential administration of live attenuated Japanese encephalitis chimeric virus vaccine and yellow fever 17D vaccine: randomized double-blind phase II evaluation of safety and immunogenicity. Human Vaccines, 6(11), 906-14. https://doi.org/10.4161/hv.6.11.12854
Nasveld PE, et al. Concomitant or Sequential Administration of Live Attenuated Japanese Encephalitis Chimeric Virus Vaccine and Yellow Fever 17D Vaccine: Randomized Double-blind Phase II Evaluation of Safety and Immunogenicity. Hum Vaccin. 2010;6(11):906-14. PubMed PMID: 20864814.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Concomitant or sequential administration of live attenuated Japanese encephalitis chimeric virus vaccine and yellow fever 17D vaccine: randomized double-blind phase II evaluation of safety and immunogenicity. AU - Nasveld,Peter E, AU - Marjason,Joanne, AU - Bennett,Sonya, AU - Aaskov,John, AU - Elliott,Suzanne, AU - McCarthy,Karen, AU - Kanesa-Thasan,Niranjan, AU - Feroldi,Emmanuel, AU - Reid,Mark, Y1 - 2010/11/01/ PY - 2010/9/25/entrez PY - 2010/9/25/pubmed PY - 2011/7/16/medline SP - 906 EP - 14 JF - Human vaccines JO - Hum Vaccin VL - 6 IS - 11 N2 - A randomized, double-blind, study was conducted to evaluate the safety, tolerability and immunogenicity of a live attenuated Japanese encephalitis chimeric virus vaccine (JE-CV) co-administered with live attenuated yellow fever vaccine (YF-17D strain; Stamaril®, Sanofi Pasteur) or administered successively. Participants (n = 108) were randomized to receive: YF followed by JE-CV 30 days later, JE followed by YF 30 days later, or the co-administration of JE and YF followed or preceded by placebo 30 days later or earlier. Placebo was used in a double-dummy fashion to ensure masking. Neutralizing antibody titers against JE-CV, YF-17D and selected wild-type JE strains was determined using a 50% serum-dilution plaque reduction neutralization test. Seroconversion was defined as the appearance of a neutralizing antibody titer above the assay cut-off post-immunization when not present pre-injection at day 0, or a least a four-fold rise in neutralizing antibody titer measured before the pre-injection day 0 and later post vaccination samples. There were no serious adverse events. Most adverse events (AEs) after JE vaccination were mild to moderate in intensity, and similar to those reported following YF vaccination. Seroconversion to JE-CV was 100% and 91% in the JE/YF and YF/JE sequential vaccination groups, respectively, compared with 96% in the co-administration group. All participants seroconverted to YF vaccine and retained neutralizing titers above the assay cut-off at month six. Neutralizing antibodies against JE vaccine were detected in 82-100% of participants at month six. These results suggest that both vaccines may be successfully co-administered simultaneously or 30 days apart. SN - 1554-8619 UR - https://www.unboundmedicine.com/medline/citation/20864814/Concomitant_or_sequential_administration_of_live_attenuated_Japanese_encephalitis_chimeric_virus_vaccine_and_yellow_fever_17D_vaccine:_randomized_double_blind_phase_II_evaluation_of_safety_and_immunogenicity_ L2 - https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/20864814/ DB - PRIME DP - Unbound Medicine ER -