Figure 3From: Serologic evidence of human orthopoxvirus infections in Sierra LeoneDistribution of IgG OD-COVs of persons born before (29 years or older, n = 670) and after (28 years or younger, n = 866) the eradication of smallpox in Sierra Leone. Values on the y-axis represent the percentage of persons in the age group with IgG OD-COVs falling within the plotted range.Back to article page