Volume 24, Number 4—April 2018
Research
Influence of Population Immunosuppression and Past Vaccination on Smallpox Reemergence
Figure 4
![Smallpox infection and death rates with different levels of residual vaccine immunity including and excluding immunosuppression in model of smallpox transmission, by age group, New York, NY, USA, and Sydney, Australia. Characteristics (e.g., size, age, immunosuppression rates) of populations from 2015 were used. A) New York 50 days after start of smallpox outbreak with no (top), base case (middle), and high (bottom) residual vaccine immunity. B) Sydney 50 days after start of smallpox outbreak wi](/eid/images/17-1233-F4.jpg)
Figure 4. Smallpox infection and death rates with different levels of residual vaccine immunity including and excluding immunosuppression in model of smallpox transmission, by age group, New York, NY, USA, and Sydney, Australia. Characteristics (e.g., size, age, immunosuppression rates) of populations from 2015 were used. A) New York 50 days after start of smallpox outbreak with no (top), base case (middle), and high (bottom) residual vaccine immunity. B) Sydney 50 days after start of smallpox outbreak with no (top), base case (middle), and high (bottom) residual vaccine immunity.
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