Epi Curves

Final Epi Curve

This outbreak can be visually described with a chart showing the number of persons who became ill each day. This chart is called an epi curve. Please see the Timeline for Reporting of Salmonella Cases for more details on the reporting process.

Persons infected with the outbreak strains of Salmonella Cotham or Salmonella Kisarawe, by week of illness onset*

*n=166 for whom information was reported as of July 21, 2014. Some illness onset dates have been estimated from other reported information. The Five Year Baseline Mean above represents the number of Salmonella Cotham cases expected to occur monthly, based on the previous five years of reports to the PulseNet database.

Previous Epi Curves

June 12, 2014

Persons infected with the outbreak strains of Salmonella Cotham or Salmonella Kisarawe, by date of illness onset*

*n=150 for whom information was reported as of June 6, 2014. Some illness onset dates have been estimated from other reported information. The Five Year Baseline Mean above represents the number of Salmonella Cotham cases expected to occur monthly, based on the previous five years of reports to the PulseNet database.

Illnesses that occurred after May 6, 2014 might not yet be reported due to the time it takes between when a person becomes ill and when the illness is reported. This takes an average of 2 to 4 weeks.

April 23, 2014

Persons infected with the outbreak strain of Salmonella Cotham, by date of illness onset*

*n=132 for whom information was reported as of April 21, 2014. Some illness onset dates have been estimated from other reported information. The Five Year Baseline Mean above represents the number of Salmonella Cotham cases expected to occur monthly, based on the previous five years of reports to the PulseNet database.

Illnesses that began after March 22, 2014, might not be reported yet due to the time it takes between when a person becomes ill and when the illness is reported. This takes an average of 2 to 4 weeks.