Moreover, this is the first report of a time-delayed CPXV infection with an identical virus strain occurring in different geographical areas, indicating a common source of infection.
We were unable to identify a possible source for some of the MLVA clusters, but many clusters were supported by epidemiologic information that indicated a common source.
The outbreaks peaked on March 26 , 2007 when 11 affected farms in 3 districts Dhaka, Gazipur, and Narayangogj formed a cluster, indicating a common source.
Virus information was collected to determine the causative agent and to determine whether identical strains indicated a common source for different ships.
Although the cause of the water contamination was not identified, the identical genetic profiles of C.jejuni isolated from patients indicate a common source of the outbreak.
The sampled farms were geographically separate, and their poultry were supplied by different companies; however the farms were situated in a region with a high density of food animal production, which could indicate a common source, or selective pressure.
The concentrations of PM10 and SO2 were also moderately correlated (r = 0.53), indicating a common source of stationary fuel combustion, although SO2 concentrations were also associated with both traffic-related pollutants.
The concentrations of PM10 and SO2 were also highly correlated (r = 0.50), indicating a common source of stationary fuel combustion, although SO2 concentrations were also correlated with both traffic-related pollutants.
Although the benefits of molecular subtyping, specifically by PFGE, in foodborne disease outbreak detection and investigation have been well established, there is no consensus about when a PFGE cluster warrants further investigation and almost no quantitative analysis about characteristics of PFGE clusters that indicate a common source will be identified (11 – 15 ).
