.onAttach <- function(libname, pkgname) {
packageStartupMessage("This is vaccineEarlyInvest v0.1;")
packageStartupMessage("see ?vaccineEarlyInvest for basic information; vignette('countryPorfolio') for a tutorial")
}
#' vaccineEarlyInvest
#'
#' This is an R package that helps determine investments to accelerate access to a Covid-19 vaccine.
#' It provides tools to compute the optimal portfolio of investments for a country that wants to buy
#' production capacity before the end of clinical trials. These tools follow the analysis and the model
#' by the [AcceleratingHT](https://www.acceleratinght.org) team.
#'
#' @section Usage:
#'
#' `vignette('countryPorfolio')` gives examples of how to use the package to determine the optimal
#' portfolio for a country, compute the demand curve for a country, and how to modify the default
#' parameters to obtain the optimal portfolio under different assumptions.
#'
#' Full details about the model can be found [here](https://www.acceleratinght.org).
#' @docType package
#' @name vaccineEarlyInvest
NULL
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