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Figure 2 | BMC Public Health

Figure 2

From: Transmission patterns of smallpox: systematic review of natural outbreaks in Europe and North America since World War II

Figure 2

Characteristics of European and North American Smallpox Outbreaks. Characteristics of outbreaks reported in detail compared to incompletely reported outbreaks: initial reproductive rate (Figure 2a), outbreak duration (Figure 2b), outbreak size (Figure 2c), and number of deaths (Figure 2d). Dark bars: characteristics of 30 outbreaks reported in detail. Light bars: characteristics of 21 incompletely reported outbreaks.

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