As a second wave of the COVID-19 pandemic hits many regions worldwide, a new study reports a method to monitor the effective reproduction number (Re) in near real-time. The study, published on the ...

A team of researchers from the University of Washington recently investigated the transmission dynamics of severe acute respiratory syndrome coronavirus-2 SARS-CoV-2 variants and reported that the ...

We demonstrate a methodology for replicating and projecting the path of COVID-19 using a simple epidemiology model. We fit the model to daily data on the number of infected cases in China, Italy, the ...

The COVID-19 pandemic has thrown up myriad questions, including how contagious the coronavirus which causes the disease is. One common way of expressing this is what experts who study the spread of ...

Governments across the world are being guided by what they call the "R rate" when it comes to fighting the COVID-19 pandemic. It can determine how long lockdowns last and what measures are adopted as ...

A new study shows how face masks reduce the effective reproduction number of COVID-19, and why their efficacy varies between different environments under virus-limited and virus-rich conditions.

Jeremy Rossman has received research funding from the Medical Research Council and the European Commission. He is the President of the non-profit organisation Research-Aid Networks. A few months ago, ...

The reproductive number R describes the average number of individuals that a person infected with a particular pathogen infects. It depends on how that pathogen is transmitted as well as how often ...