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| Nick Savill |
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Nick
is a mathematical modeller and has worked on evolutionary genetics and
ecology, cellular dynamics, and infectious disease epidemiology. The
unifying theme is of understanding and quantifying processes that
govern the dynamics of biological systems. His work is driven by the
belief that integrating mathematical modelling and empirical research
is an efficient way of testing competing hypotheses, generating
biological insight and using and re-using data. This approach entails
the development of large numbers of models encompassing the set
competing hypotheses and their testing against empirical data using
methods of Bayesian model-based inference. In this way, integrating and iterating theory and
experiment creates strongly supported, biologically plausible models.
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Jayanthi Santhanam
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Jay
is a Physicist who applies modelling techniques well known in Physics
to Biological and Social Sciences. She is particularly interested in
understanding the effects of environmental pressures that lead to
biological and social evolution. Her work is based on the belief that
starting from first principles and using simple approximations, one can
build models for complex systems, and still understand what causes an
observed phenomena. She received her Ph.D in Physics from the
University of Rochester, USA in 2004, and continued her research
on Bose-Einstein Condensation at the University of New Mexico.
She started her interdisciplinary work when she was at the Epidemiology
Group at the University of Liverpool, building models for gun crimes
in Greater Manchester. She continued her interdisciplinary work
at the University of Warwick, where she worked on constructing a
nationwide meta-population model for livestock diseases in the USA. She
works with Nick and Andrew Read on developing and testing mathematical
models of the within-host dynamics of rodent malaria infections.
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| Zach Janes |
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Zach is a
PhD student with Nick. His main interests are 1) the application of
computer simulations, particularly network-based models, to problems in
epidemiology and population genetics which are too complex for current
mathematical models to yield very informative results, and 2) using the
results of these simulations to develop more complex mathematical
models. His PhD project is on using large-scale simulations to gain a
better understanding of the effect of a range of population dynamic
processes - particularly complex population structure, intra-host
competition and host-parasite coevolution - on the phylogeny (the
phylodynamics) of epidemic viral diseases. |
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Past members
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Suzanne St. Rose
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Suzanne
was a postdoc on a Defra funded project studying silent spread of
highly pathogenic avian influenza (HPAI) in vaccinated poultry flocks.
We built a detailed individual-based model of HPAI spread in different
types of poultry rearing systems and parameterised it from experimental
and epidemiological studies. We found some rather counter-intuitive
results. A flock with
about 80% of its birds vaccinated may be more infectious than an
unvaccinated flock.The effectiveness of a vaccine in
protecting individual birds from infection makes little difference to
silent spread of bird flu. Our results suggested protection at the
level of
a flock is a more important risk factor of silent spread than vaccine
effectiveness in individual birds. We concluded that vaccination should
never be done without the use of unvaccinated
'sentinel' birds. These birds are the best method for rapid detection
of bird flu in a vaccinated flock. Suzanne is now at LSHTM.
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| Martin Miller |
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Martin
was a postdoc with Nick and Andrew Read on a Wellcome Trust funded
project to develop and test mechanistic mathematical models of the
within-host dynamics of rodent malaria infections. Using high-quality
experimental data from a previously published experiment, Martin
untangled and quantified the complexities of the immune responses
against malaria parasites. Martin's work has formed the foundation upon
which the group's other model fitting projects depend.
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| Brajendra Singh |
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Brajendra was
a Research Fellow in the Interdisciplinary Centre for Human
and Avian Influenza Research. He developed a new surveillance
algorithm for specific, sensitive and rapid detection of pandemic
influenza in Scotland. The algorithm uses historic weekly case data
from sentinel GPs in Scotland to determine if current cases are
unusual, thereby signalling a potential pandemic. The algorithm detects
pandemics about a week faster, and is more sensitive, than other methods.
More importantly it could potentially be used for other epidemic
diseases. |
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| Mike Tildesley |
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Mike was a CIIE fellow working with Nick and David
Gally of the Roslin Institute on a model of E.
coli
O157
colonisation and growth in the terminal rectum of cattle. He showed
that the immune the response has to completely limit bacterial
replication on the epithelium within days 5-7, and the consequences of
the response can result in a second peak in excretion which was only
observed as a consequence of the modeling. In terms of the infection,
Mike's work informs when samples should be taken and the types of
innate response to be investigated.
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| Nicole Mideo |
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Nicole was a CIIE fellow working with Sarah Reece and Nick. She is interested
in the ecology and evolution
of infectious diseases, particularly understanding the within-host
dynamics of malaria infections and why
patterns of disease vary between parasite strains and in response to
changes in the in-host environment (e.g. immunity, anemia). She
integrates
theory and experimentation to identify mechanisms and evolutionary
explanations for
these observed differences. Nicole's main aim is to build up a
foundation from which to
explore applied issues that are relevant for human health policy, using
new modeling approaches that link the within- and between-host scales
of disease dynamics. |
Created 26 August 2006, Update 8 January 2012
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