(K=population size, beta=transmission rate, alpha=recovery rate, S0=susceptible at the onset of the epidemic, S∞=susceptible at the end of the epidemic) of an infection leading to immunity depends on ...

We published an article earlier this month that contained incorrect estimates for the basic reproduction number (R0) for COVID subvariants BA.4/BA.5 and BA.2. We have now corrected the error, but I ...

Two ongoing outbreaks have dominated headlines in the past few months. Since the beginning of the year, measles has sickened at least 940 people in 26 U.S. states as of May 24. In Congo, Ebola has ...

From March to July 1996 a measles outbreak occurred in northern Luxembourg with 110 reported cases centered around two primary schools (85 cases) and the surrounding community (25 cases). Eighty four ...

During the pandemic we have all become familiar with a lot of epidemiological concepts. One that was introduced to us early in 2020 is the “basic reproductive number”, or R0. This tells us about the ...

Scientists say there is no evidence that the BA.5 version of the Omicron coronavirus variant is more transmissible than measles, or that it has a basic reproduction number, or "R-naught" (R0), of 18.6 ...

The end of the coronavirus pandemic will most likely be tied to the development of a vaccine — a process that could take about 18 months. But countries under lockdown could resume normal activities ...

The coronavirus disease 2019 (COVID-19) pandemic started with an outbreak of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in Wuhan, Hubei province, China, in December 2019. Since ...