Clinical Edge

Summaries of Must-Read Clinical Literature, Guidelines, and FDA Actions

Evaluating Vaccination Strategies for Zika Virus

Ann Intern Med; ePub 2018 Apr 3; Durham, et al

A Zika virus vaccine of moderate to high efficacy may virtually eliminate prenatal infections through a combination of direct protection and transmission reduction, a recent study found. The study sought to quantify the effect of Zika vaccine (with 75% efficacy) prioritization of females aged 9 to 49 years, followed by males aged 9 to 49 years, on incidence of prenatal Zika infections. A compartmental model of Zika transmission between mosquitoes and humans was developed and calibrated to empirical estimates of country-specific mosquito density. 34 counties and territories in the Americans with documented Zika outbreaks were included in the analysis. Researchers found:

  • For a base-case vaccine efficacy of 75% and vaccination coverage of 90%, immunizing females aged 9 to 49 years would reduce the incidence of prenatal infections by at least 94%.
  • In regions where an outbreak is not expected for at least 10 years, vaccination of women aged 15 to 29 years in more efficient than that of women aged ≥30 years.
  • The study was limited in that population-level modeling may not capture all local and neighborhood-level heterogeneity in mosquito abundance or Zika incidence.

Citation:

Durham DP, Fitzpatrick MC, Ndeffo-Mbah ML, Parpia AS, Michael NL, Galvani AP. Evaluating vaccination strategies for Zika virus in the Americas. [Published online ahead of print April 3, 2018]. Ann Intern Med. doi:10.7326/M17-0641.

This Week's Must Reads

Androgen Deprivation Therapy & Risk of Depression, Cancer; ePub 2019 Feb 12; Deka, Rose, et al

QOL in Patients with Low-Risk PC Treated with HRT, JAMA Oncol; ePub 2019 Feb 14; Bruner, et al

Hospital Competition & Prostate Cancer Outcomes, Cancer; ePub 2019 Feb 1; Aggarwal, et al

Insurance Status & Stage of Prostate Ca Diagnosis, Cancer Epidemiol; 2019 Apr; Ramirez, Morano, et al

Agent Orange Exposure & Prostate Ca Outcomes, J Urol; ePub 2019 Jan 8; Etheridge, et al

Must Reads in Vaccines

Vaccination for Prevention of Herpes Zoster, Ann Intern Med; ePub 2019 Feb 19; Prosser, et al

ACIP Updates Adult Immunization Schedule, Ann Intern Med; 2019 Feb 5; Kim, Hunter, et al

Influenza Vaccination Safety During Hospitalization, Mayo Clin Proc; ePub 2019 Jan 8; Tartof, et al

Evaluating Vaccination Strategies for Zika Virus, Ann Intern Med; ePub 2018 Apr 3; Durham, et al

2018 Adult ACIP Immunization Schedule Released, Ann Intern Med; 2018 Feb 6; Kim, Riley, et al