Results 21 to 30 of about 250,589 (337)
Cross-reactive memory T cells and herd immunity to SARS-CoV-2
Nature reviews. Immunology, 2020 Immunity is a multifaceted phenomenon. For T cell-mediated memory responses to SARS-CoV-2, it is relevant to consider their impact both on COVID-19 disease severity and on viral spread in a population.
M. Lipsitch +3 more
semanticscholar +1 more source
The disease-induced herd immunity level for Covid-19 is substantially lower than the classical herd immunity level [PDF]
medRxiv, 2020 Most countries are suffering severely from the ongoing covid-19 pandemic despite various levels of preventive measures. A common question is if and when a country or region will reach herd immunity h. The classical herd immunity level hC is defined as hC=
T. Britton, F. Ball, Pieter Trapman
semanticscholar +1 more source
Journal of Algebra, 2009 The notion of a bimodule herd is introduced and studied. A bimodule herd consists of a $B$-$A$ bimodule, its formal dual, called a pen, and a map, called a shepherd, which satisfies untiality and coassociativity conditions. It is shown that every bimodule herd gives rise to a pair of corings and coactions.
Brzezi'nski, Tomasz, Vercruysse, Joost
openaire +6 more sources
Herd Immunity and Implications for SARS-CoV-2 Control.
Journal of the American Medical Association (JAMA), 2020 Herd immunity, also known as indirect protection, community immunity, or community protection, refers to the protection of susceptible individuals against an infection when a sufficiently large proportion of immune individuals exist in a population.
S. Omer, I. Yildirim, H. Forman
semanticscholar +1 more source
The Effect of Farming System Type on Piglet Production
Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2020 Reproductive performance of sows is the main factor influencing the profitability of piglet production, and simultaneously it is a basic indicator of farm management quality.
Kamila Pokorná +5 more
doaj +1 more source
A Simple Model of Herd Behavior
, 1992 We analyze a sequential decision model in which each decision maker looks at the decisions made by previous decision makers in taking her own decision.
A. Banerjee
semanticscholar +1 more source
Optimal hjordsammansättning - ett systemanalytisk problem
Rangifer, 1984 Optimal hjordsammansättning - ett systemanalytisk problem.
Öje Danell
doaj +1 more source
Dynamics of Population Immunity Due to the Herd Effect in the COVID-19 Pandemic
Vaccines, 2020 The novel Coronavirus 2 Severe Acute Respiratory Syndrome (SARS-Cov-2) has led to the Coronavirus Disease 2019 (COVID-19) pandemic, which has surprised health authorities around the world, quickly producing a global health crisis.
V. Clemente-Suárez +8 more
semanticscholar +1 more source
Between-herd variation in resilience and relations to herd performance [PDF]
Journal of Dairy Science, 2021 Resilient cows are minimally affected in their functioning by infections and other disturbances, and recover quickly. Herd management is expected to have an effect on disturbances and the resilience of cows, and this effect was investigated in this study. Two resilience indicators were first recorded on individual cows. The effect of herd-year on these
Poppe, M. +3 more
openaire +4 more sources
Controlling the Herd: Applications of Herding Theory [PDF]
Research Papers in Economics, 2001 The literature on informational cascades and herding theory has for a decade focused on the externality and suboptimal outcomes generated from decision-making when spaces are coarser than private information spaces. Much of the output has therefore been positive, not normative.
openaire +3 more sources