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Information and public services for the Island of Jersey

L'înformâtion et les sèrvices publyis pouor I'Île dé Jèrri

Covid-19 clusters (FOI)

Covid-19 clusters (FOI)

Produced by the Freedom of Information office
Authored by Government of Jersey and published on 09 December 2020.
Prepared internally, no external costs.

​Request

In the recent press release, Ivan Muscatt mentioned clusters.

The ECDC has a "Summary overview of reported clusters of COVID-19 in different occupational settings"

Since October 2020, how many clusters have tested positive, and how many in each cluster tested positive?

Can the type of cluster be identified? For example:

  • hospitals

  • long-term care facilities

  • primary care facilities

  • building and construction sites 

  • office

  • office Party

  • educational facilities (Schools / Highlands)

  • restaurant / Cafe

  • church

Response

The number of cases with an unknown source is constantly changing as the team constantly review cases to determine whether there is a link to other cases, a known cluster or particular premises.

As at 6 November 2020, the Deputy Medical Officer of Health provided snapshot information in a press conference regarding the number of positive cases which, at that time, had an unconfirmed source.

The slide is reproduced at the link below: 

Incidents of Unknown Source 

Since then the number of cases / groups / clusters without source have increased as demonstrated in the below table (snapshot of cases / groups / clusters with unknown sources end of Sat 28 Nov):

​Single case

​Household group

​Small cluster

​Large cluster

​Total

​October​4-​2​2​8​
​November​386​15​13​72​
​Total​426​17​15​80​

 

It is challenging to accurately comment on the number of positive cases in each of the clusters as the information is constantly changing and the clusters sometimes overlap.

Most clusters involve cases in a range of settings and differing environments, therefore cannot be reliably grouped by ‘type’ of cluster.  However as of the 28 November these clusters were predominantly linked to enclosed environments with repeated or prolonged exposure to an individual or individuals who subsequently test positive for COVID-19.  Almost all groups or clusters at this stage were linked to one of the following:

  • family groups with repeated household interactions

  • party / gathering – in a private dwelling, private function, pub or restaurant

  • office workplaces or socialising with people linked to work

  • physical activity in gyms

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