Related Experiment Videos
Waning immunity and its effects on vaccination schedules
V Rouderfer1, N G Becker, H W Hethcote
1School of Statistics, La Trobe University, Bundoora, Vic, Australia.
Mathematical Biosciences
|November 1, 1994
Summary
Optimal vaccination ages are influenced by waning immunity, especially for vaccine-induced immunity without disease boosting. Higher coverage is needed to eradicate measles when vaccine immunity wanes.
Area of Science:
- Epidemiology
- Immunology
- Mathematical Modeling
Background:
- Maternal immunity influences newborn immunity duration.
- Waning immunity and disease exposure can boost immunity.
Purpose of the Study:
- Determine optimal vaccination ages for one- and two-dose schedules.
- Analyze the impact of immunity waning and boosting on vaccination strategies.
Main Methods:
- Utilized an age-specific transmission model.
- Incorporated maternal immunity, waning immunity, and immunity boosting.
Main Results:
- Waning of disease-acquired immunity is plausible with boosting but doesn't significantly affect optimal schedules.
- Loss of vaccine-induced immunity substantially impacts optimal schedules, especially without boosting.
- Optimal ages for two-dose schedules depend on vaccination coverage.
Conclusions:
- Vaccine-induced immunity waning is a critical factor for optimal vaccination schedules.
- Measles eradication requires higher vaccination coverage than previously estimated due to waning immunity.