Results 21 to 30 of about 459,296 (269)

Estimation of the Serial Interval of Influenza [PDF]

open access: yesEpidemiology, 2009
: Estimates of the clinical-onset serial interval of human influenza infection (time between onset of symptoms in an index case and a secondary case) are used to inform public health policy and to construct mathematical models of influenza transmission. We estimate the serial interval of laboratory-confirmed influenza transmission in households.: Index
Riley, S   +4 more
openaire   +4 more sources

Dynamic characteristics of a COVID-19 outbreak in Nanjing, Jiangsu province, China

open access: yesFrontiers in Public Health, 2022
ObjectivesSevere acute respiratory syndrome coronavirus 2 (SARS-CoV-2) lineage B.1.617.2 (also named the Delta variant) was declared as a variant of concern by the World Health Organization (WHO).
Junjun Wang   +27 more
doaj   +1 more source

Estimation of the Instantaneous Reproduction Number and Its Confidence Interval for Modeling the COVID-19 Pandemic

open access: yesMathematics, 2022
In this paper, we derive an optimal model for calculating the instantaneous reproduction number, which is an important metric to help in controlling the evolution of epidemics.
Publio Darío Cortés-Carvajal   +2 more
doaj   +1 more source

Estimation of the basic reproductive number and mean serial interval of a novel pathogen in a small, well-observed discrete population [PDF]

open access: yes, 2016
BACKGROUND:Accurately assessing the transmissibility and serial interval of a novel human pathogen is public health priority so that the timing and required strength of interventions may be determined.
Riley, S, Wu, KM
core   +6 more sources

Serial Intervals for SARS-CoV-2 Omicron and Delta Variants, Belgium, November 19–December 31, 2021

open access: yesEmerging Infectious Diseases, 2022
We investigated the serial interval for SARS-CoV-2 Omicron BA.1 and Delta variants and observed a shorter serial interval for Omicron, suggesting faster transmission.
Cécile Kremer   +5 more
doaj   +1 more source

Effects of interrun interval on serial learning [PDF]

open access: yesAnimal Learning & Behavior, 1985
Two groups of five rats each received a decreasing quantity of food reward, 14-7-3-1-0 .045-g food pellets, over successive runs in a runway. The interrun interval (IRI) separating runs within each of two daily pattern repetitions (trials) was 10 sec (short, S) or 4–5 min (long, L) and varied over four successive phases of training in the order ...
Steven J. Haggbloom, Michael W. Ekdahl
openaire   +2 more sources

Serial pattern learning of temporal intervals [PDF]

open access: yesAnimal Learning & Behavior, 1998
The problem was to determine how rats adjust the times of their lever responses to repeating sequences of interfood intervals. In Experiment 1, rats were trained on an interval schedule of reinforcement with a 12-element Fleshler-Hoffman series with a mean of 60 sec; the order was as follows: ascending, random with repetition, random with replacement ...
Russell M. Church, Donna M. Lacourse
openaire   +1 more source

Serial intervals in SARS-CoV-2 B.1.617.2 variant cases [PDF]

open access: yesThe Lancet, 2021
The SARS-CoV-2 lineage B.1.617.2, also known as the delta variant, was declared a variant of concern by WHO on the basis of preliminary evidence suggesting faster spread relative to other circulating variants. However, the epidemiological factors contributing to this difference remain unclear. In particular, an increase in observed growth rate of COVID-
Pung, Rachael   +3 more
openaire   +2 more sources

An update of serial interval estimates for COVID-19: a meta-analysis

open access: yes4 open, 2022
Background: Serial interval (SI) is one of the most important parameter for COVID-19 modelling purposes as it is related to the reproduction rate of the infection.
Jusot Jean-François
doaj   +1 more source

The importance of timely contact tracing — A simulation study

open access: yesInternational Journal of Infectious Diseases, 2021
Background: While the role of contact tracing in the containment of the COVID-19 epidemic remains important until vaccines are widely available, literature on objectively measurable indicators for the effectiveness of contact tracing is scarce.
Sofia K. Mettler   +6 more
doaj   +1 more source

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