Imperial College London

ProfessorNicholasGrassly

Faculty of MedicineSchool of Public Health

Prof of Infectious Disease & Vaccine Epidemiology
 
 
 
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Contact

 

+44 (0)20 7594 3264n.grassly Website

 
 
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Location

 

G36Medical SchoolSt Mary's Campus

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Summary

 

Publications

Publication Type
Year
to

124 results found

Grassly NC, Wenger J, Durrani S, Bahl S, Deshpande JM, Sutter RW, Heymann DL, Aylward RBet al., 2007, Protective efficacy of a monovalent oral type 1 poliovirus vaccine: a case-control study, LANCET, Vol: 369, Pages: 1356-1362, ISSN: 0140-6736

Journal article

Grassly NC, Fraser C, Wenger J, Deshpande JM, Sutter RW, Heymann DL, Aylward RBet al., 2006, New strategies for the elimination of polio from India, SCIENCE, Vol: 314, Pages: 1150-1153, ISSN: 0036-8075

Journal article

Grassly NC, Fraser C, 2006, Seasonal Infectious Disease Epidemiology, Proceedings of the Royal Society of London B, Vol: FirstCite Early Online Publish

Journal article

Brown T, Grassly NC, Garnett G, Stanecki Ket al., 2006, Improving projections at the country level: the UNAIDS Estimation and Projection Package 2005, SEXUALLY TRANSMITTED INFECTIONS, Vol: 82, Pages: III34-III40, ISSN: 1368-4973

Journal article

Stover J, Walker N, Grassly NC, Marston Met al., 2006, Projecting the demographic impact of AIDS and the number of people in need of treatment: updates to the Spectrum Projection Package, SEXUALLY TRANSMITTED INFECTIONS, Vol: 82, Pages: III45-III50, ISSN: 1368-4973

Journal article

Brown T, Grossly NC, Garnett G, Stanecki Ket al., 2006, Improving projections at the country level: the UNAIDS Estimation and Projection Package 2005, SEX TRANSM INFECT, Vol: 82, Pages: 34-40, ISSN: 1368-4973

Background: UNAIDS has developed the Estimation and Projection Package (EPP) as a tool for national programmes to use for making national estimates and short term projections of HIV prevalence. EPP provides direct input to Spectrum, which produces incidence, deaths, and AIDS impacts.Methods: The latest version, EPP 2005, includes substantial methodological improvements over the previous version. These include: (1) parallel, but unique, interfaces for generalised and concentrated epidemics; (2) use of maximum likelihood fitting procedures; (3) a new procedure, known as level fits, adjusting for expansion of national surveillance systems into lower prevalence sites; (4) provisions for handling turnover in at-risk populations, including the reassignment of HIV positive former members to lower risk populations; and (5) user-defined calibration to HIV prevalence levels from general population or other epidemiological surveys.Results: Following regional training in mid 2005, this new version has been applied by many national programmes to make their end of 2005 estimates of HIV infections. UNAIDS has combined these national estimates to form the 2005 global HIV and AIDS estimates.Conclusion: EPP 2005 is a substantial improvement over previous versions, forming a solid base for the next round of modifications. Proposed modifications for that next version are presented for the reader's information.

Journal article

Grassly NC, Timaeus IM, 2005, Methods to estimate the number of orphans as a result of AIDS and other causes in sub-Saharan Africa, JAIDS-JOURNAL OF ACQUIRED IMMUNE DEFICIENCY SYNDROMES, Vol: 39, Pages: 365-375, ISSN: 1525-4135

Journal article

Grassly NC, Garnett GP, 2005, The future of the HIV pandemic, BULLETIN OF THE WORLD HEALTH ORGANIZATION, Vol: 83, Pages: 378-382, ISSN: 0042-9686

Journal article

Grassly NC, Fraser C, Garnett GP, 2005, Host immunity and synchronized epidemics of syphilis across the United States, NATURE, Vol: 433, Pages: 417-421, ISSN: 0028-0836

Journal article

Grassly NC, Morgan M, Walker N, Garnett G, Stanecki KA, Stover J, Brown T, Ghys PDet al., 2004, Uncertainty in estimates of HIV/AIDS: the estimation and application of plausibility bounds, SEXUALLY TRANSMITTED INFECTIONS, Vol: 80, ISSN: 1368-4973

Journal article

Walker N, Stover J, Stanecki K, Zaniewski AE, Grassly NC, Garcia-Calleja JM, Ghys PDet al., 2004, The workbook approach to making estimates and projecting future scenarios of HIV/AIDS in countries with low level and concentrated epidemics, SEXUALLY TRANSMITTED INFECTIONS, Vol: 80, ISSN: 1368-4973

Journal article

Ghys PD, Brown T, Grassly NC, Garnett G, Stanecki KA, Stover J, Walker Net al., 2004, The UNAIDS Estimation and Projection Package: a software package to estimate and project national HIV epidemics, SEXUALLY TRANSMITTED INFECTIONS, Vol: 80, ISSN: 1368-4973

Journal article

Garnett GP, Grassly NC, Boerma JT, Ghys PDet al., 2004, HIV surveillance data analytical tools - Maximising the global use of HIV surveillance data through the development and sharing of analytical tools, SEXUALLY TRANSMITTED INFECTIONS, Vol: 80, ISSN: 1368-4973

Journal article

Grassly NC, Lewis JJC, Mahy M, Walker N, Timaeus IMet al., 2004, Comparison of household-survey estimates with projections of mortality and orphan numbers in sub-Saharan Africa in the era of HIV/AIDS, POPULATION STUDIES-A JOURNAL OF DEMOGRAPHY, Vol: 58, Pages: 207-217, ISSN: 0032-4728

Journal article

Walker N, Grassly NC, Garnett GP, Stanecki KA, Ghys PDet al., 2004, Estimating the global burden of HIV/AIDS: what do we really know about the HIV pandemic?, LANCET, Vol: 363, Pages: 2180-2185, ISSN: 0140-6736

Journal article

Pisani E, Garnett GP, Brown T, Stover J, Grassly NC, Hankins C, Walker N, Ghys PDet al., 2003, Back to basics in HIV prevention: focus on exposure, BRITISH MEDICAL JOURNAL, Vol: 326, Pages: 1384-1387, ISSN: 0959-535X

Journal article

Grassly NC, Desai K, Pegurri E, Sikazwe A, Malambo I, Siamatowe C, Bundy Det al., 2003, The economic impact of HIV/AIDS on the education sector in Zambia, AIDS, Vol: 17, Pages: 1039-1044, ISSN: 0269-9370

Journal article

Grassly NC, Garnett GP, 2003, Explicit models make better policy, International Journal of Drug Policy, Vol: 14, Pages: 339-341

Journal article

Grassly NC, Lowndes CM, Rhodes T, Judd A, Renton A, Garnett GPet al., 2003, Modelling emerging HIV epidemics: the role of injecting drug use and sexual transmission in the Russian Federation, China and India., International Journal of Drug Policy, Vol: 14, Pages: 25-43

Journal article

Stover J, Walker N, Garnett GP, Salomon JA, Stanecki KA, Ghys PD, Grassly NC, Anderson RM, Schwartlander Bet al., 2002, Can we reverse the HIV/AIDS pandemic with an expanded response?, LANCET, Vol: 360, Pages: 73-77, ISSN: 0140-6736

Journal article

Garnett GP, Bartley L, Grassly NC, Anderson RMet al., 2002, Antiretroviral therapy to treat and prevent HIV/AIDS in resource-poor settings, NATURE MEDICINE, Vol: 8, Pages: 651-654, ISSN: 1078-8956

Journal article

Garnett GP, Artzrouni M, Brown T, Feeney G, Ghys PD, Grassly NC, Lazzari S, Schneider D, Stanecki K, Stover J, Schwartlander B, Walker N, Way P, Yan P, Zaba B, Zlotnik H, Boerma T, Brahmbhatt H, Calleja J, Chin J, Coutinho R, Dabis F, De Cock K, Fitzgerald D, Gray R, Kitayaporn Det al., 2002, Improved methods and assumptions for estimation of the HIV/AIDS epidemic and its impact: recommendations for the UNAIDS reference group on estimates, modelling and projections, Aids, Vol: 16, ISSN: 0269-9370

Journal article

Grassly NC corresponding author, 2002, Improved methods and assumptions for estimation of the HIV/AIDS epidemic and its impact: Recommendations of the UNAIDS Reference Group on Estimates, Modelling and Projections, AIDS, Vol: 16

Journal article

Grassly NC, Garnett GP, Schwartlander B, Gregson S, Anderson RMet al., 2001, The effectiveness of HIV prevention and the epidemiological context, BULLETIN OF THE WORLD HEALTH ORGANIZATION, Vol: 79, Pages: 1121-1132, ISSN: 0042-9686

Journal article

Garnett GP, Grassly NC, Gregson S, 2001, AIDS: The makings of a development disaster?, J Int Dev, Vol: 13, Pages: 391-409, ISSN: 0954-1748

Journal article

Garnett GP, Grassly NC, Gregson SJ, 2001, AIDS: The makings of a development disaster?, Journal of International Development, Vol: 13, Pages: 391-409

Journal article

Grassly NC, von Haeseler A, Krakauer DC, 2000, Error, population structure and the origin of diverse sign systems, JOURNAL OF THEORETICAL BIOLOGY, Vol: 206, Pages: 369-378, ISSN: 0022-5193

Journal article

Grassly NC, Harvey PH, Holmes EC, 1999, Population dynamics of HIV-1 inferred from gene sequences, GENETICS, Vol: 151, Pages: 427-438, ISSN: 0016-6731

Journal article

Grassly NC, Xiang Z, Ariyoshi K, Aaby P, Jensen H, van der Loeff MS, Dias F, Whittle H, Breuer Jet al., 1998, Mortality among human immunodeficiency virus type 2-positive villagers in rural Guinea-Bissau is correlated with viral genotype, JOURNAL OF VIROLOGY, Vol: 72, Pages: 7895-7899, ISSN: 0022-538X

Journal article

Grassly NC, Adachi J, Rambaut A, 1997, PSeq-Gen: an application for the Monte Carlo simulation of protein sequence evolution along phylogenetic trees, COMPUTER APPLICATIONS IN THE BIOSCIENCES, Vol: 13, Pages: 559-560, ISSN: 0266-7061

Journal article

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