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Figure 3. Estimated liver parasite load on day 6

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1 Figure 3. Estimated liver parasite load on day 6
Figure 3. Estimated liver parasite load on day 6.5, with 95% confidence intervals, plotted by volunteer. Volunteers are grouped according to vaccine and ordered according to liver burden. Groups are ordered according to efficacy (significant delay to parasitemia by blood-film data). The dashed horizontal line marks the average liver burden for control subjects. D, DNA expressing malaria epitope-thrombospondin-related adhesion protein (ME-TRAP); F, attenuated fowlpox strain FP9 expressing ME-TRAP; ICC-1132, a hepatitis B core-based circumsporozoite vaccine; M, modified virus Ankara (MVA) expressing ME-TRAP; R, particulate vaccine RTS,S/AS02 encoding most of the circumsporozoite protein. M appearing in regimens with RTS,S/AS02 denotes MVA expressing the circumsporozoite protein. From: Calculation of Liver-to-Blood Inocula, Parasite Growth Rates, and Preerythrocytic Vaccine Efficacy, from Serial Quantitative Polymerase Chain Reaction Studies of Volunteers Challenged with Malaria Sporozoites J Infect Dis. 2005;191(4): doi: /427243 J Infect Dis | © 2005 by the Infectious Diseases Society of America

2 Figure 4. Growth rates, with 95% confidence intervals, plotted by volunteer. Volunteers are grouped according to vaccine and ordered according to growth rate. The dashed horizontal line marks the average growth rate. D, DNA expressing malaria epitope-thrombospondin–related adhesion protein (ME-TRAP); F, attenuated fowlpox strain FP9 expressing ME-TRAP; ICC-1132, a hepatitis B core-based circumsporozoite vaccine; M, modified virus Ankara (MVA) expressing ME-TRAP; R, particulate vaccine RTS,S/AS02 encoding most of the circumsporozoite protein. M appearing in regimens with RTS,S/AS02 denotes MVA expressing the circumsporozoite protein. From: Calculation of Liver-to-Blood Inocula, Parasite Growth Rates, and Preerythrocytic Vaccine Efficacy, from Serial Quantitative Polymerase Chain Reaction Studies of Volunteers Challenged with Malaria Sporozoites J Infect Dis. 2005;191(4): doi: /427243 J Infect Dis | © 2005 by the Infectious Diseases Society of America

3 Figure 5. Comparison of estimates for liver burden by different modeling strategies. D, DNA expressing malaria epitope-thrombospondin–related adhesion protein (ME-TRAP); F, attenuated fowlpox strain FP9 expressing ME-TRAP; ICC-1132, a hepatitis B core–based circumsporozoite vaccine; M, modified virus Ankara (MVA) expressing ME-TRAP; R, particulate vaccine RTS,S/AS02 encoding most of the circumsporozoite protein. M appearing in regimens with RTS,S/AS02 denotes MVA expressing the circumsporozoite protein. From: Calculation of Liver-to-Blood Inocula, Parasite Growth Rates, and Preerythrocytic Vaccine Efficacy, from Serial Quantitative Polymerase Chain Reaction Studies of Volunteers Challenged with Malaria Sporozoites J Infect Dis. 2005;191(4): doi: /427243 J Infect Dis | © 2005 by the Infectious Diseases Society of America

4 Figure 6. Schema relating sporozoite inoculum, initial merozoite release, multiplication rate, and diagnosis by blood-film examination From: Calculation of Liver-to-Blood Inocula, Parasite Growth Rates, and Preerythrocytic Vaccine Efficacy, from Serial Quantitative Polymerase Chain Reaction Studies of Volunteers Challenged with Malaria Sporozoites J Infect Dis. 2005;191(4): doi: /427243 J Infect Dis | © 2005 by the Infectious Diseases Society of America

5 Figure 1. Example of line fit by individual sine wave modeling approach. Volunteer 184 received FP9 followed by modified virus Ankara expressing the malaria epitope-thrombospondin-related adhesion protein and became positive, by blood-film examination, on day 11. The line drawn here was determined by log(P) = 0.56t sin(πt ). PCR, polymerase chain reaction. From: Calculation of Liver-to-Blood Inocula, Parasite Growth Rates, and Preerythrocytic Vaccine Efficacy, from Serial Quantitative Polymerase Chain Reaction Studies of Volunteers Challenged with Malaria Sporozoites J Infect Dis. 2005;191(4): doi: /427243 J Infect Dis | © 2005 by the Infectious Diseases Society of America

6 Figure 2. r<sup>2</sup> values for line fit, by individual sine wave modeling
From: Calculation of Liver-to-Blood Inocula, Parasite Growth Rates, and Preerythrocytic Vaccine Efficacy, from Serial Quantitative Polymerase Chain Reaction Studies of Volunteers Challenged with Malaria Sporozoites J Infect Dis. 2005;191(4): doi: /427243 J Infect Dis | © 2005 by the Infectious Diseases Society of America

7 Table 1. Summary of vaccination regimens, nos
Table 1. Summary of vaccination regimens, nos. of volunteers with polymerase chain reaction (PCR) data available, and efficacy determined by use of blood-film data. From: Calculation of Liver-to-Blood Inocula, Parasite Growth Rates, and Preerythrocytic Vaccine Efficacy, from Serial Quantitative Polymerase Chain Reaction Studies of Volunteers Challenged with Malaria Sporozoites J Infect Dis. 2005;191(4): doi: /427243 J Infect Dis | © 2005 by the Infectious Diseases Society of America


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