# Creating a CDI survey

There are three Clostridium difficile surveillance options:

• Minimal – collects:

o Aggregated numerator and denominator data

• Light – collects:

o Aggregated numerator and denominator data

o Case-based numerator data

• Enhanced

o Aggregated numerator and denominator data

o Case-based numerator data

o Microbiological data

Please refer to the CDI Protocol for detailed descriptions of these options.

Please bear the following in mind when planning your CDI survey:

• Continuous surveillance for 12 months is recommended.

• The recommended minimum surveillance period is three consecutive months, preferably from 1 October to 31 December, or from 1 January to 31 March.

• Starting on the first day of the month is recommended (the pilot study demonstrated that completing Form H is much easier by starting surveillance on the first day of a month).

• You cannot change the start date of the survey once it has been defined. When creating your CDI survey, it is therefore important to make sure its start date is earlier than any ward survey date.

• You can have multiple surveys, but two surveys cannot start on the same date.

• You can later change from Minimal to Light, or from Light to Enhanced, but not vice versa.

CDI survey data collection is described in the following sections:

• Entering CDI hospital-based data (Form H)

• Entering CDI patient, CDI and microbiological data (Form C)

• Entering CDI microbiological data (Form M)

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© European Centre for Disease Prevention and Control, 2016
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