Despite use of 23-valent pneumococcal polysaccharide vaccine (PPV23) in England, disease burden among at-risk adults remains high. We evaluated the public health and budgetary impact of 20-valent pneumococcal conjugate vaccine (PCV20) compared to the current adult pneumococcal vaccination program.
Five-year outcomes and costs of invasive pneumococcal disease (IPD) and community-acquired pneumonia (CAP) among adults aged 65–99 years and adults aged 18–64 years with underlying conditions in England were projected using a deterministic cohort model. Hypothetical vaccination with PCV20 versus PPV23 was compared from the National Health Service (NHS) perspective.
Replacing PPV23 with PCV20 would prevent 785 IPD hospitalizations, 11,751 CAP hospitalizations, and 1,414 deaths over 5 years, and would reduce medical care costs by £48.5 M. With vaccination costs higher by £107.2 M, projected net budgetary impact is £58.7 M. The budgetary impact would be greatest in year 1 (£26.3 M), and would decrease over time (to £1.6 M by year 5). The average budget increase (£11.7 M/year) represents <0.01% of the Department of Health and Social Care total budget and <3% of the vaccine budget.
Use of PCV20 among adults currently eligible for PPV23 in England would substantially reduce the burden of pneumococcal disease, with modest budgetary impact.