Volume 13, Number 9—September 2007
Research
Detecting Human-to-Human Transmission of Avian Influenza A (H5N1)
Figure
![Schematic of estimation method. An infectious person (in red) infects a susceptible person (in green) in the same household with probability of household secondary attack rate (SAR1) and infects a susceptible person in a different household with probability SAR2. The common infectious source (i.e., avian hosts) infects a susceptible person with probability b per day. The likelihood function is constructed from symptom-onset dates and exposure information to estimate the above parameters](/eid/images/07-0111-F1.jpg)
Figure. Schematic of estimation method. An infectious person (in red) infects a susceptible person (in green) in the same household with probability of household secondary attack rate (SAR1) and infects a susceptible person in a different household with probability SAR2. The common infectious source (i.e., avian hosts) infects a susceptible person with probability b per day. The likelihood function is constructed from symptom-onset dates and exposure information to estimate the above parameters
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