Clusters of COVID-19

Relevance: Prelims: Science

Cluster network of the cases in Singapore for the COVID-19 global ...

Why in news?

  • While authorities are trying to ensure that the spread of the disease is minimized through a slew of measures, including lockdown, contact tracing, isolation, and testing, they are striving to identify limited localities where the infection is concentrated.

News in detail

  • The World Health Organization (WHO) does not have a specific definition for cluster transmissions.
  • A disease cluster is defined as “an aggregation of cases in an identifiable subpopulation.”
  • The word ‘cases’ in the definition stands for people with similar symptoms or a medical condition and ‘subpopulation’ points to those who share or belong to the same space, time, family, workplaces, etc.
  • Reports show that the novel coronavirus can travel about six feet from a diseased person and cause infection between two and four individuals.
  • Thus, when people congregate in a place — typically for worship/shopping/commute — the chance of a disease spread multiplies, resulting in a cluster of cases.
  • The size of a disease cluster could vary widely from just four cases to as many as 5,000 depending on the place visited by the infected individuals.

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