Comparison of H5pp and MN tests by Bland & Altman method.

<p>On the x axis, the means of the H5 titers observed with the two methods are shown for individual samples. On the y axis, the difference between the methods divided by the means of the titers presented in percent. The limits of agreements are depicted. A total of 101 sera were included in the analysis. Bland and Altman plot, N  = 101. Bias: 31.9% [95% Confidence Interval  = +17.1% to +46.7%]. Limits of agreement  = −115.6% and +179.5%.</p

Time of seroconversion and mean antibodies titers measured 3 weeks after onset of disease or presumed exposure.

<p>*MN =  standard microneutralization test; *H5pp =  Pseudotyped H5 particles-based microneutralisation test.</p><p>**Only available among H5N1-infected patients.</p

H5 neutralizing antibody titers by H5pp (1a) and MN (1b) tests in 31 asymptomatic/mild individuals.

<p>Orange lines: Fig. 1a: Linear regression line (slope of –0.06, p value  = 0.172). Fig1b: Linear regression line (slope of –0.31, p value  = 0.024). Cross points: Seropositive cases' neutralizing antibody titers at Weeks 7, 9, 48 and 51 after exposure (n = 54). Green line: Threshold titer at 80.</p

Timing of sera collection, neutralizing antibodies titers and clinical outcomes from 11 patients with clinically apparent H5N1 virus infection, 2003/2004.

<p>*MN =  standard microneutralization test; *H5pp =  pseudotyped H5 particles-based microneutralization test.</p

Characteristics of individuals tested positive by serology in Cambodia and Vietnam.

<p>Characteristics of individuals tested positive by serology in Cambodia and Vietnam.</p

Exposure to poultry for poultry workers in the 12 months prior to serum sample collection.

<p>*Missing data for 8 poultry workers.</p><p>#Missing data for 2 poultry workers.</p

Exposure to poultry for cullers in the 12 months prior to serum sample collection.

<p>*chicken and/or ducks.</p

Protective measures taken by poultry workers and cullers during live poultry exposure as part of poultry work (poultry farmers) or culling (cullers).

<p>*138/183 poultry farmers and 240/317 cullers were exposed to live poultry during the 6 months prior to sample collection.</p