Related Experiment Video

Updated: Oct 15, 2025

Author Spotlight: Advancements in Multiplex Detection of Respiratory Viruses
03:53

Author Spotlight: Advancements in Multiplex Detection of Respiratory Viruses

Published on: November 10, 2023

1.5K

Epidemiological Factors Associated with COVID-19 Clusters in Medical and Social Welfare Facilities

Tadatsugu Imamura1,2, Yura K Ko3,4, Yuki Furuse5

  • 1Japan International Cooperation Agency, Japan.

Japanese Journal of Infectious Diseases
|November 1, 2021
PubMed

Insights

COVID-19 clusters in Japanese medical and social welfare facilities occurred later than the general population peak. Cluster size correlated with duration, but facility type influenced early case detection timing.

Area of Science:

  • Epidemiology
  • Infectious Diseases
  • Public Health

Background:

  • Understanding COVID-19 transmission dynamics in healthcare and social welfare settings is crucial.
  • Previous studies have not fully elucidated factors influencing COVID-19 cluster size in these facilities.

Purpose of the Study:

  • To analyze the characteristics of COVID-19 clusters in Japanese medical and social welfare facilities.
  • To identify factors associated with the size of these COVID-19 clusters.

Main Methods:

  • Retrospective review of COVID-19 cases in Japan between January 15 and April 30, 2020.
  • Analysis of cluster data from 56 medical and 34 social welfare facilities.
  • Statistical correlation analysis to determine factors associated with cluster size.

Main Results:

  • COVID-19 cluster peaks in facilities occurred after the general population peak.
  • Cluster duration positively correlated with the number of cases in both facility types.
  • Time from prefecture's first case to cluster onset negatively correlated with cluster size in social welfare facilities only.

Conclusions:

  • COVID-19 cases in medical and social welfare facilities were prevalent during later stages of community transmission.
  • The mechanisms driving these trends may differ between medical and social welfare settings.
  • Facility-specific strategies are needed to mitigate COVID-19 spread.

Keywords:
COVID-19cluster-based approachmedical facilitiessocial welfare facilities

More Related Videos

Quantification and Whole Genome Characterization of SARS-CoV-2 RNA in Wastewater and Air Samples09:26

Quantification and Whole Genome Characterization of SARS-CoV-2 RNA in Wastewater and Air Samples

Published on: June 30, 2023

1.3K
Concentration of Virus Particles from Environmental Water and Wastewater Samples Using Skimmed Milk Flocculation and Ultrafiltration10:53

Concentration of Virus Particles from Environmental Water and Wastewater Samples Using Skimmed Milk Flocculation and Ultrafiltration

Published on: March 17, 2023

1.9K

Related Concept Videos

Factors Affecting Illness01:18

Factors Affecting Illness

When a person's physical, emotional, intellectual, social development or spiritual functioning is compromised, this deviation from a healthy normal state is called illness. Illness creates stress that in turn harms individuals. Irritation, anger, denial, hopelessness, and fear are behavioral and emotional changes an individual experiences in the phases of illness. A variety of factors influence a person's health and well-being.
For instance, risk factors are connected to illness,...
4.6K
Factors Affecting the Risk of Infection01:26

Factors Affecting the Risk of Infection

The hosts' susceptibility to infection depends on several factors. The integrity of the skin and mucous membranes helps protect the body against microbial attacks. When the skin is altered, the chance of infection, limb loss, and even death increases.
The integrity and count of the white blood cells help the body resist pathogens and fight infection. When impaired, it reduces the body's resistance to pathogens. The acidic pH levels of the gastrointestinal, genitourinary tracts, and skin...
12.8K
Causality in Epidemiology01:21

Causality in Epidemiology

Causality or causation is a fundamental concept in epidemiology, vital for understanding the relationships between various factors and health outcomes. Despite its importance, there's no single, universally accepted definition of causality within the discipline. Drawing from a systematic review, causality in epidemiology encompasses several definitions, including production, necessary and sufficient, sufficient-component, counterfactual, and probabilistic models. Each has its strengths and...
1.1K
Bias in Epidemiological Studies01:29

Bias in Epidemiological Studies

Biases can arise at various stages of research, from study design and data collection to analysis and interpretation. Recognizing and addressing these biases is essential to ensure the validity and reliability of epidemiological findings.Broadly speaking, biases in epidemiology fall into three main categories: selection bias, information bias, and confounding. A more detailed description of possible biases is:  
779
Specialized Care Centers and Settings-I01:30

Specialized Care Centers and Settings-I

Specialized care settings or centers are situated in convenient locations within the community and offer care to a specific group or population. They consist of daycare facilities, mental health facilities, rural health facilities, educational institutions, industries, shelters for the homeless, and rehabilitation facilities.
Daycare centers
They provide several functions. Some facilities care for healthy newborns and children whose parents work, while others are medically focused and care for...
1.0K
Principles of Disease Surveillance01:26

Principles of Disease Surveillance

Disease surveillance is the systematic collection, analysis, and interpretation of health data essential to the planning, implementation, and evaluation of public health practice. This process integrates data dissemination to entities responsible for preventing and controlling disease, injury, and disability. Surveillance systems provide crucial information for action, helping public health authorities make informed decisions to manage and prevent outbreaks, ensure public safety, optimize...
236