Rnaught is an R package and web application for estimating the basic reproduction number of infectious diseases. For information about using this application, view the Help tab. To learn more about the package, visit the online documentation or GitHub repository. Technical details about the estimators featured in this project can be found in the reference article.
The basic reproduction number, denoted R0, is defined as the expected number of infections caused by a single infectious individual when introduced into a totally susceptible population. It assumes that all individuals in a given population are susceptible to the disease, and that no preventive measures (such as lockdowns or vaccinations) have been enforced. It is a useful indicator of the transmissibility of an infectious disease during the early stages of its spread and detection.
If R0 < 1, the disease will eventually die out. On the other hand, if R0 > 1, the disease will spread (the higher the R0, the faster this will happen). Due to uncertainty of known data about the disease, it is difficult to determine R0 precisely. Therefore, many estimation methods exist, each based on different assumptions and yielding different estimates. It is the responsibility of users to employ the most appropriate estimator (or suite of estimators) given the situation at hand.