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Volumn 8, Issue 1, 2011, Pages

The feasibility of age-specific travel restrictions during influenza pandemics

Author keywords

[No Author keywords available]

Indexed keywords

AGE; AIRCRAFT; ARTICLE; FEASIBILITY STUDY; HUMAN; INFLUENZA; PANDEMIC; PROBABILITY; STATISTICS; TRAVEL;

EID: 81055150385     PISSN: None     EISSN: 17424682     Source Type: Journal    
DOI: 10.1186/1742-4682-8-44     Document Type: Article
Times cited : (20)

References (60)
  • 2
    • 67649297821 scopus 로고    scopus 로고
    • Emergence and pandemic potential of swine-origin H1N1 influenza virus
    • 10.1038/nature08157 19525932
    • Emergence and pandemic potential of swine-origin H1N1 influenza virus. Neumann G, Noda T, Kawaoka Y, Nature 2009 459 931 939 10.1038/nature08157 19525932
    • (2009) Nature , vol.459 , pp. 931-939
    • Neumann, G.1    Noda, T.2    Kawaoka, Y.3
  • 3
    • 79957535568 scopus 로고    scopus 로고
    • Early estimation of the reproduction number in the presence of imported cases: Pandemic influenza H1N1-2009 in New Zealand
    • 10.1371/journal.pone.0017835 21637342
    • Early estimation of the reproduction number in the presence of imported cases: pandemic influenza H1N1-2009 in New Zealand. Roberts MG, Nishiura H, PLoS One 2011 6 17835 10.1371/journal.pone.0017835 21637342
    • (2011) PLoS One , vol.6 , pp. 517835
    • Roberts, M.G.1    Nishiura, H.2
  • 5
    • 47549101434 scopus 로고    scopus 로고
    • A simple explanation for the low impact of border control as a countermeasure to the spread of an infectious disease
    • 10.1016/j.mbs.2008.02.009 18387639
    • A simple explanation for the low impact of border control as a countermeasure to the spread of an infectious disease. Scalia Tomba G, Wallinga J, Math Biosci 2008 214 70 72 10.1016/j.mbs.2008.02.009 18387639
    • (2008) Math Biosci , vol.214 , pp. 70-72
    • Scalia Tomba, G.1    Wallinga, J.2
  • 7
    • 33646541387 scopus 로고    scopus 로고
    • Will travel restrictions control the international spread of pandemic influenza?
    • 10.1038/nm0506-497 16675989
    • Will travel restrictions control the international spread of pandemic influenza? Hollingsworth TD, Ferguson NM, Anderson RM, Nat Med 2006 12 497 499 10.1038/nm0506-497 16675989
    • (2006) Nat Med , vol.12 , pp. 497-499
    • Hollingsworth, T.D.1    Ferguson, N.M.2    Anderson, R.M.3
  • 8
    • 55849087943 scopus 로고    scopus 로고
    • Controlling pandemic flu: The value of international air travel restrictions
    • 10.1371/journal.pone.0000401 17476323
    • Controlling pandemic flu: the value of international air travel restrictions. Epstein JM, Goedecke DM, Yu F, Morris RJ, Wagener DK, Bobashev GV, PLoS One 2007 2 401 10.1371/journal.pone.0000401 17476323
    • (2007) PLoS One , vol.2 , pp. 5401
    • Epstein, J.M.1    Goedecke, D.M.2    Yu, F.3    Morris, R.J.4    Wagener, D.K.5    Bobashev, G.V.6
  • 9
    • 70449432653 scopus 로고    scopus 로고
    • Small islands and pandemic influenza: Potential benefits and limitations of travel volume reduction as a border control measure
    • 10.1186/1471-2334-9-160 19788751
    • Small islands and pandemic influenza: potential benefits and limitations of travel volume reduction as a border control measure. Eichner M, Schwehm M, Wilson N, Baker MG, BMC Infect Dis 2009 9 160 10.1186/1471-2334-9-160 19788751
    • (2009) BMC Infect Dis , vol.9 , pp. 160
    • Eichner, M.1    Schwehm, M.2    Wilson, N.3    Baker, M.G.4
  • 10
    • 33745615112 scopus 로고    scopus 로고
    • Delaying the international spread of pandemic influenza
    • DOI 10.1371/journal.pmed.0030212
    • Delaying the international spread of pandemic influenza. Cooper BS, Pitman RJ, Edmunds WJ, Gay NJ, PLoS Med 2006 3 212 10.1371/journal.pmed.0030212 16640458 (Pubitemid 43987827)
    • (2006) PLoS Medicine , vol.3 , Issue.6 , pp. 0845-0855
    • Cooper, B.S.1    Pitman, R.J.2    Edmunds, W.J.3    Gay, N.J.4
  • 11
    • 31344469306 scopus 로고    scopus 로고
    • Non-pharmaceutical interventions for pandemic influenza, international measures
    • 16494722 World Health Organization Writing Group
    • Non-pharmaceutical interventions for pandemic influenza, international measures. Bell DM, World Health Organization Writing Group, Emerg Infect Dis 2006 12 81 87 16494722
    • (2006) Emerg Infect Dis , vol.12 , pp. 81-87
    • Bell, D.M.1
  • 12
    • 28644441452 scopus 로고    scopus 로고
    • World Health Organization Geneva, World Health Organization [last accessed on 9 August 2011]
    • World Health Organization, International Health Regulations, 2005 Geneva, World Health Organization 2005 http://www.who.int/ihr/en/ [last accessed on 9 August 2011]
    • (2005) International Health Regulations, 2005
  • 14
    • 77149155310 scopus 로고    scopus 로고
    • Pros and cons of estimating the reproduction number from early epidemic growth rate of influenza A (H1N1) 2009
    • 10.1186/1742-4682-7-1 20056004
    • Pros and cons of estimating the reproduction number from early epidemic growth rate of influenza A (H1N1) 2009. Nishiura H, Chowell G, Safan M, Castillo-Chavez C, Theor Biol Med Model 2010 7 1 10.1186/1742-4682-7-1 20056004
    • (2010) Theor Biol Med Model , vol.7 , pp. 1
    • Nishiura, H.1    Chowell, G.2    Safan, M.3    Castillo-Chavez, C.4
  • 17
    • 79955673057 scopus 로고    scopus 로고
    • Household transmission of influenza (H1N1-2009) in Japan: Age-specificity and reduction of household transmission risk by zanamivir treatment
    • 21672367
    • Household transmission of influenza (H1N1-2009) in Japan: age-specificity and reduction of household transmission risk by zanamivir treatment. Nishiura H, Oshitani H, J Int Med Res 2011 39 619 628 21672367
    • (2011) J Int Med Res , vol.39 , pp. 619-628
    • Nishiura, H.1    Oshitani, H.2
  • 18
    • 77954363508 scopus 로고    scopus 로고
    • Travel and age of influenza A (H1N1) 2009 virus infection
    • 10.1111/j.1708-8305.2010.00418.x
    • Travel and age of influenza A (H1N1) 2009 virus infection. Nishiura H, J Trav Med 2010 17 269 270 10.1111/j.1708-8305.2010.00418.x
    • (2010) J Trav Med , vol.17 , pp. 269-270
    • Nishiura, H.1
  • 19
    • 79951957994 scopus 로고    scopus 로고
    • Assortativity and the Probability of Epidemic Extinction: A Case Study of Pandemic Influenza A (H1N1-2009)
    • 21234337
    • Assortativity and the Probability of Epidemic Extinction: A Case Study of Pandemic Influenza A (H1N1-2009). Nishiura H, Cook AR, Cowling BJ, Interdiscip Perspect Infect Dis 2011 2011 194507 21234337
    • (2011) Interdiscip Perspect Infect Dis , vol.2011 , pp. 194507
    • Nishiura, H.1    Cook, A.R.2    Cowling, B.J.3
  • 20
    • 78951486438 scopus 로고    scopus 로고
    • Theoretical basis to measure the impact of short-lasting control of an infectious disease on the epidemic peak
    • 10.1186/1742-4682-8-2 21269441
    • Theoretical basis to measure the impact of short-lasting control of an infectious disease on the epidemic peak. Omori R, Nishiura H, Theor Biol Med Model 2011 8 2 10.1186/1742-4682-8-2 21269441
    • (2011) Theor Biol Med Model , vol.8 , pp. 2
    • Omori, R.1    Nishiura, H.2
  • 22
    • 84857054594 scopus 로고    scopus 로고
    • Ministry of Justice Japan Tokyo, Ministry of Justice, Japan [last accessed on 4 November 2011]
    • Ministry of Justice, Japan, Annual Report of Statistics on Legal Migrants, 2010 Tokyo, Ministry of Justice, Japan 2011 http://www.immi-moj.go.jp/ toukei/ [last accessed on 4 November 2011]
    • (2011) Annual Report of Statistics on Legal Migrants, 2010
  • 23
    • 81055137611 scopus 로고    scopus 로고
    • Estimating the transmission potential of supercritical processes based on the final size distribution of minor outbreaks
    • 10.1016/j.jtbi.2011.10.039 22079419
    • Estimating the transmission potential of supercritical processes based on the final size distribution of minor outbreaks. Nishiura H, Yan P, Sleeman CK, Mode CJ, J Theor Biol 2012 294 48 55 10.1016/j.jtbi.2011.10.039 22079419
    • (2012) J Theor Biol , vol.294 , pp. 48-55
    • Nishiura, H.1    Yan, P.2    Sleeman, C.K.3    Mode, C.J.4
  • 24
    • 80051569842 scopus 로고    scopus 로고
    • Transmission parameters of the A/H1N1 (2009) influenza virus pandemic: A review
    • 10.1111/j.1750-2659.2011.00234.x 21668690
    • Transmission parameters of the A/H1N1 (2009) influenza virus pandemic: a review. Bolle PY, Ansart S, Cori A, Valleron AJ, Influenza Other Respi Viruses 2011 5 306 316 10.1111/j.1750-2659.2011.00234.x 21668690
    • (2011) Influenza Other Respi Viruses , vol.5 , pp. 306-316
    • Bolle, P.Y.1    Ansart, S.2    Cori, A.3    Valleron, A.J.4
  • 25
    • 0007632955 scopus 로고
    • Multivariate birth-and-death processes as approximations to epidemic processes
    • 10.2307/3212492
    • Multivariate birth-and-death processes as approximations to epidemic processes. Griffiths DA, J Appl Prob 1973 10 15 26 10.2307/3212492
    • (1973) J Appl Prob , vol.10 , pp. 15-26
    • Griffiths, D.A.1
  • 26
    • 65349139495 scopus 로고    scopus 로고
    • Quarantine for pandemic influenza control at the borders of small island nations
    • 10.1186/1471-2334-9-27 19284571
    • Quarantine for pandemic influenza control at the borders of small island nations. Nishiura H, Wilson N, Baker MG, BMC Infect Dis 2009 9 27 10.1186/1471-2334-9-27 19284571
    • (2009) BMC Infect Dis , vol.9 , pp. 27
    • Nishiura, H.1    Wilson, N.2    Baker, M.G.3
  • 27
    • 46349105244 scopus 로고    scopus 로고
    • The waiting time for inter-country spread of pandemic influenza
    • 10.1371/journal.pone.0000143 17206278
    • The waiting time for inter-country spread of pandemic influenza. Caley P, Becker NG, Philp DJ, PLoS One 2007 2 143 10.1371/journal.pone.0000143 17206278
    • (2007) PLoS One , vol.2 , pp. 5143
    • Caley, P.1    Becker, N.G.2    Philp, D.J.3
  • 29
    • 70349540330 scopus 로고    scopus 로고
    • Optimizing influenza vaccine distribution
    • 10.1126/science.1175570 19696313
    • Optimizing influenza vaccine distribution. Medlock J, Galvani AP, Science 2009 325 1705 1708 10.1126/science.1175570 19696313
    • (2009) Science , vol.325 , pp. 1705-1708
    • Medlock, J.1    Galvani, A.P.2
  • 30
    • 78651354788 scopus 로고    scopus 로고
    • Modelling the strategies for age specific vaccination scheduling during influenza pandemic outbreaks
    • 21361404
    • Modelling the strategies for age specific vaccination scheduling during influenza pandemic outbreaks. Knipl DH, Röst G, Math Biosci Eng 2011 8 123 139 21361404
    • (2011) Math Biosci Eng , vol.8 , pp. 123-139
    • Knipl, D.H.1    Röst, G.2
  • 31
    • 80052035040 scopus 로고    scopus 로고
    • An analysis of national target groups for monovalent 2009 pandemic influenza vaccine and trivalent seasonal influenza vaccines in 2009-10 and 2010-11
    • 10.1186/1471-2334-11-230 21871096
    • An analysis of national target groups for monovalent 2009 pandemic influenza vaccine and trivalent seasonal influenza vaccines in 2009-10 and 2010-11. Ng S, Wu P, Nishiura H, Ip DK, Lee ES, Cowling BJ, BMC Infect Dis 2011 11 230 10.1186/1471-2334-11-230 21871096
    • (2011) BMC Infect Dis , vol.11 , pp. 230
    • Ng, S.1    Wu, P.2    Nishiura, H.3    Ip, D.K.4    Lee, E.S.5    Cowling, B.J.6
  • 32
    • 80053616415 scopus 로고    scopus 로고
    • Transmissibility of seasonal and pandemic influenza in a cohort of households in Hong Kong in 2009
    • 21878814
    • Transmissibility of seasonal and pandemic influenza in a cohort of households in Hong Kong in 2009. Klick B, Nishiura H, Ng S, Fang VJ, Leung GM, Peiris JS, Cowling BJ, Epidemiology 2011 22 793 796 21878814
    • (2011) Epidemiology , vol.22 , pp. 793-796
    • Klick, B.1    Nishiura, H.2    Ng, S.3    Fang, V.J.4    Leung, G.M.5    Peiris, J.S.6    Cowling, B.J.7
  • 34
    • 77950387286 scopus 로고    scopus 로고
    • Entry screening to delay local transmission of 2009 pandemic influenza A (H1N1)
    • 10.1186/1471-2334-10-82 20353566
    • Entry screening to delay local transmission of 2009 pandemic influenza A (H1N1). Cowling BJ, Lau LL, Wu P, Wong HW, Fang VJ, Riley S, Nishiura H, BMC Infect Dis 2010 10 82 10.1186/1471-2334-10-82 20353566
    • (2010) BMC Infect Dis , vol.10 , pp. 82
    • Cowling, B.J.1    Lau, L.L.2    Wu, P.3    Wong, H.W.4    Fang, V.J.5    Riley, S.6    Nishiura, H.7
  • 35
    • 79955515372 scopus 로고    scopus 로고
    • Fever screening during the influenza (H1N1-2009) pandemic at Narita International Airport, Japan
    • 10.1186/1471-2334-11-111 21539735
    • Fever screening during the influenza (H1N1-2009) pandemic at Narita International Airport, Japan. Nishiura H, Kamiya K, BMC Infect Dis 2011 11 111 10.1186/1471-2334-11-111 21539735
    • (2011) BMC Infect Dis , vol.11 , pp. 111
    • Nishiura, H.1    Kamiya, K.2
  • 38
    • 84857056631 scopus 로고    scopus 로고
    • Argentina and Brazil identify first flu cases
    • France: France 24 News (last accessed on 3 August 2011)
    • Argentina and Brazil identify first flu cases. France 24 International News, France: France 24 News http://www.france24.com/en/20090508-argentina- brazil-identify-first-flu-cases- (last accessed on 3 August 2011)
    • France 24 International News
  • 39
    • 70249128377 scopus 로고    scopus 로고
    • Clinical Investigation Group: Clinical and epidemiologic characteristics of 3 early cases of influenza A pandemic (H1N1) 2009 virus, People's Republic of China
    • National Influenza A Pandemic (H1N1) 19788809
    • National Influenza A Pandemic (H1N1) 2009 Clinical Investigation Group: Clinical and epidemiologic characteristics of 3 early cases of influenza A pandemic (H1N1) 2009 virus, People's Republic of China. Bin C, Xingwang L, Yuelong S, Nan J, Shijun C, Xiayuan X, Chen W, National Influenza A Pandemic (H1N1) 2009 Clinical Investigation Group, Emerg Infect Dis 2009 15 1418 1422 19788809
    • (2009) Emerg Infect Dis , vol.15 , pp. 1418-1422
    • Bin, C.1    Xingwang, L.2    Yuelong, S.3    Nan, J.4    Shijun, C.5    Xiayuan, X.6    Chen, W.7
  • 40
    • 84857045881 scopus 로고    scopus 로고
    • (last accessed on 3 August 2011)
    • First Case of A (H1N1), http://www.hoy.com.ec/noticias-ecuador/cierran- colegio-de-guayaquil-por-amenaza-de-gripe-ah1n1-348654.html (last accessed on 3 August 2011)
    • First Case of A (H1N1)
  • 41
    • 84857056632 scopus 로고    scopus 로고
    • Sante Medecine last accessed on 3 August 2011
    • Deux nouveaux cas de grippe A (H1N1) en France. Sante Medecine, http://sante-medecine.commentcamarche.net/news/109060-deux-nouveaux-cas-de- grippe-a-h1n1-en-france (last accessed on 3 August 2011)
    • Deux Nouveaux Cas de Grippe A (H1N1) en France
  • 44
    • 68149155428 scopus 로고    scopus 로고
    • Estimating the reproduction number of the novel influenza A virus (H1N1) in a Southern Hemisphere setting: Preliminary estimate in New Zealand
    • 19829398
    • Estimating the reproduction number of the novel influenza A virus (H1N1) in a Southern Hemisphere setting: preliminary estimate in New Zealand. Nishiura H, Wilson N, Baker M, N Z Med J 2009 122 1299 73 77 19829398
    • (2009) N Z Med J , vol.122 , Issue.1299 , pp. 73-77
    • Nishiura, H.1    Wilson, N.2    Baker, M.3
  • 45
    • 84857036884 scopus 로고    scopus 로고
    • Criança com gripe viajou do Canadá last accessed on 3 August 2011
    • Criança com gripe viajou do Canadá http://www.cmjornal.xl. pt/noticia.aspx?contentid=0B34FC39-52D7-4E43-8655-ED3AE49A1A16&channelid= F48BA50A-0ED3-4315-AEFA-86EE9B1BEDFF (last accessed on 3 August 2011)
  • 46
    • 84857043763 scopus 로고    scopus 로고
    • Ministry of Health Singapore Singapore: Ministry of Health, Singapore last accessed on 3 August 2011
    • MOH-8th Confirmed Case of Influenza A (H1N1-2009). Ministry of Health, Singapore, Singapore: Ministry of Health, Singapore http://app.crisis.gov.sg/ InfluenzaA/Press.aspx?id = 41 (last accessed on 3 August 2011)
    • MOH - 8th Confirmed Case of Influenza A (H1N1-2009)
  • 49
    • 70350738123 scopus 로고    scopus 로고
    • The importance of school and social activities in the transmission of influenza A(H1N1)v: England, April - June 2009
    • last accessed on 3 August 2011
    • The importance of school and social activities in the transmission of influenza A(H1N1)v: England, April-June 2009. Kar-Purkayastha I, Ingram C, Maguire H, Roche A, Euro Surveill 2009 14 33 http://www.eurosurveillance.org/ ViewArticle.aspx?ArticleId=19311 pii = 19311, (last accessed on 3 August 2011)
    • (2009) Euro Surveill , vol.14 , Issue.33
    • Kar-Purkayastha, I.1    Ingram, C.2    Maguire, H.3    Roche, A.4
  • 50
    • 65249188436 scopus 로고    scopus 로고
    • Swine Influenza A (H1N1) Infection in Two Children-Southern California, March-April 2009
    • Anonymous
    • Swine Influenza A (H1N1) Infection in Two Children-Southern California, March-April 2009. Anonymous, Mortal Morbid Wkly Rep 2009 58 1 3
    • (2009) Mortal Morbid Wkly Rep , vol.58 , pp. 1-3
  • 51
    • 84857045879 scopus 로고    scopus 로고
    • (last accessed on 3 August 2011)
    • Sydney Morning Herald, Australia. Second wave of swine flu to hit, http://www.smh.com.au/national/second-wave-of-swine-flu-to-hit-20100206-njv1. html (last accessed on 3 August 2011)
    • Second Wave of Swine Flu to Hit
  • 52
    • 84857063594 scopus 로고    scopus 로고
    • Department of health ageing Australia Australia: Department of health and ageing (last accessed on 3 August 2011)
    • Australian influenza report 2009-16 to 29 May 2009. Department of health and ageing, Australia, Australia: Department of health and ageing http://www.health.gov.au/internet/main/publishing.nsf/Content/cda-ozflu-29-5-09. htm (last accessed on 3 August 2011)
    • Australian Influenza Report 2009 - 16 to 29 May 2009
  • 54
    • 70350702408 scopus 로고    scopus 로고
    • Epidemiological and clinical characteristics of influenza A(H1N1)v infection in children: The first 45 cases in Cyprus, June - August 2009
    • last accessed on 3 August 2011
    • Epidemiological and clinical characteristics of influenza A(H1N1)v infection in children: The first 45 cases in Cyprus, June-August 2009. Koliou M, Soteriades ES, Toumasi MM, Demosthenous A, Hadjidemetriou A, Euro Surveill 2009 14 33 http://www.eurosurveillance.org/ViewArticle.aspx?ArticleId=19312 pii = 19312, (last accessed on 3 August 2011)
    • (2009) Euro Surveill , vol.14 , Issue.33
    • Koliou, M.1    Soteriades, E.S.2    Toumasi, M.M.3    Demosthenous, A.4    Hadjidemetriou, A.5
  • 55
    • 70249149334 scopus 로고    scopus 로고
    • Outbreak of influenza A(H1N1)v without travel history in a school in the Toulouse district, France, June 2009
    • pii = 19265, (last accessed on 3 August 2011)
    • Outbreak of influenza A(H1N1)v without travel history in a school in the Toulouse district, France, June 2009. Guinard A, Grout L, Durand C, Schwoebel V, Euro Surveill 2009 14 27 http://www.eurosurveillance.org/ViewArticle.aspx? ArticleId=19265 pii = 19265, (last accessed on 3 August 2011)
    • (2009) Euro Surveill , vol.14 , Issue.27
    • Guinard, A.1    Grout, L.2    Durand, C.3    Schwoebel, V.4
  • 56
    • 70349317360 scopus 로고    scopus 로고
    • Description of the early stage of pandemic (H1N1) 2009 in Germany, 27 April-16 June 2009
    • Novel influenza A(H1N1) investigation team accessed on 3 August 2011
    • Description of the early stage of pandemic (H1N1) 2009 in Germany, 27 April-16 June 2009. Novel influenza A(H1N1) investigation team, Euro Surveill 2009 14 31 http://www.eurosurveillance.org/ViewArticle.aspx?ArticleId=19295 pii = 19295, (accessed on 3 August 2011)
    • (2009) Euro Surveill , vol.14 , Issue.31
  • 57
    • 84857045878 scopus 로고    scopus 로고
    • last accessed on 3 August 2011
    • Japan confirms 96 H1N1 flu cases, most are students, http://thestar.com. my/news/story.asp?file=/2009/5/18/worldupdates/2009-05-18T090420Z-01-NOOTR- RTRMDNC-0-396888-1&sec=Worldupdates (last accessed on 3 August 2011)
    • Japan Confirms 96 H1N1 Flu Cases Most Are Students
  • 58
    • 84857056626 scopus 로고    scopus 로고
    • last accessed on 3 August 2011
    • Macao Reports 6 New A/H1N1 Confirmed Cases, http://english.cri.cn/6909/ 2009/07/01/1261s498178.htm (last accessed on 3 August 2011)
    • Macao Reports 6 New A/H1N1 Confirmed Cases
  • 59
    • 73449113289 scopus 로고    scopus 로고
    • Influenza A/H1N1 Pandemic: The Scare of 2009
    • Influenza A/H1N1 Pandemic: The Scare of 2009. Lee KC, Malaysian J Med Sci 2009 16 3 1 3
    • (2009) Malaysian J Med Sci , vol.16 , Issue.3 , pp. 1-3
    • Lee, K.C.1
  • 60
    • 74049106567 scopus 로고    scopus 로고
    • Outbreak of 2009 pandemic influenza A (H1N1) at a New York City school
    • and the New York City Department of Health and Mental Hygiene Swine Influenza Investigation Team 10.1056/NEJMoa0906089 20042754
    • Outbreak of 2009 pandemic influenza A (H1N1) at a New York City school. Lessler J, Reich NG, Cummings DAT and the New York City Department of Health and Mental Hygiene Swine Influenza Investigation Team, N Engl J Med 2009 361 2628 2636 10.1056/NEJMoa0906089 20042754
    • (2009) N Engl J Med , vol.361 , pp. 2628-2636
    • Lessler, J.1    Reich, N.G.2    Cummings, D.A.T.3


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