Project immunity from a baseline — project

Project immunity from a baseline via vaccination coverage rates

Usage

project_immunity(
  baseline_immunity,
  baseline_year,
  year,
  coverage,
  schedule,
  maternal_immunity,
  efficacy
)

Arguments

baseline_immunity: baseline immunity, as a named vector; the names correspond to lower limits of the age groups, and the vector itself to the corresponding levels of immunity.
baseline_year: year at which baseline immunity is taken (corresponding to a column in the coverage argument)
year: year to project to
coverage: coverage with multiple vaccine doses, given as a matrix in which each row is a dose and each (named) column a year
schedule: the ages at which vaccines are given (in years).
maternal_immunity: the proportion maternally immune.
efficacy: vaccine efficacy.

Value

a data frame of immunity levels by age group (as in baseline_immunity).

Author

Sebastian Funk <sebastian.funk@lshtm.ac.uk>

Examples

baseline_immunity <- c(`2` = 0.85, `5` = 0.9, `10` = 0.95)
coverage <- matrix(rep(0.9, 10), nrow = 2)
colnames(coverage) <- as.character(seq(2015, 2019))
project_immunity(
  baseline_immunity, 2018, 2019, coverage = coverage,
  schedule = c(1, 2), 0.5, 0.95
)
#>         0         2         5        10 
#> 0.6775000 0.8929917 0.8900000 0.9500000