What is Contact Tracing and Why is It The Most Effective Way to Prevent COVID-19 Spread?

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In the past, contact tracing has been a useful strategy to control some disease outbreaks such as Ebola, SARS and tuberculosis. But what exactly is contact tracing and why is it so important right now?

The WHO defines contact tracing as the process of identifying, assessing and managing people who have been exposed to a disease to prevent onward transmissions by separating people who have (or may have) a disease from people who do not. Contact tracing for COVID-19 requires identifying people who have been exposed to the virus and backtracking their location for the last two weeks.

According to CDC, contact tracing should be conducted in the following four stages:

As we have explained, contact tracing is a process that involves investigating cases and continues until the disease transmission is interrupted. For this reason, many experts and researchers agree that contact tracing is a key strategy to prevent the spread of COVID-19.

According to McKinsey & Company, “a highly effective program of testing, tracing, isolation of cases, and quarantining contacts can achieve similar benefits as a lockdown while allowing the vast majority of the population the freedom to conduct day-to-day activities.” Moreover, is the most effective way for controlling infectious diseases outbreaks at a low economic cost.

Source: McKinsey & Company COVID-19 Facts and Insights 2020

Some countries had implemented contact tracing successfully like in South Korea. By late February, the asian country was the second largest outbreak of COVID-19 next to China. The number of reported cases reached a peak of 909 daily infections. The Korean CDC in collaboration with government authorities and telecommunication companies, worked together immediately following an aggressive and widespread strategy based on extensive testing, contact tracing and quarantining. By March, daily cases started to count by dozens or less.

Nevertheless, traditional contact tracing requires trained people with specialized knowledge and skills including an understanding of medical terms and principles of infection exposure, the patient confidentiality, sensible interpersonal skills, how to refer people to medical or public resources and much more.

In fact, a study done by Johns Hopkins University estimates the US needs at least 100,000 additional public health workers to help with contact tracing. Moreover, it estimates each person with coronavirus infects another two or three other people, making it very difficult to find everyone who could be infected.

Technology has had an important role when it comes to contact tracing. Experts agree that the adoption of digital contact tracing tools can make contact tracing process faster, more efficient, increase productivity, reduce potential exposure to the disease by limiting physic contact as well as reduce costs. Not only is contact tracing an effective way to halt the spread of coronavirus disease but also it can be a cost-effective alternative for blanket lockdowns.

In our last blog, we explained why certain people and places (also called “super-spreaders”) can spread the more virus depending on their circumstances. As you know, workplaces can become potential places with higher levels of COVID-19 transmissions, especially if employees perform activities in a closed environment where people are in close contact for a long period of time.

The best measure to prevent super-spreader events at your workplace is identifying COVID-19 cases and any person who was in contact with them as soon as possible.

With Kwema’s Smart Badge for Contact Tracing & Emergency Alerts, your employees follow a seamless checkpoint system to check in and check out of high-traffic areas like the cafeterias, conference rooms, major hallways and entrances.

When somebody is diagnosed positive for COVID-19 using GDPR Guidelines Kwema allows you to do three key things:

2. Identify WHO they may have come into contact with

3. Classify all employees into 3 RISK GROUPS and take action to prevent spread

Kwema’s Smart Badge for Contact Tracing & Emergency Alerts

Contact us for a Free Assessment on how likely your employees are to adopt new safety measures for COVID-19 by sending an email to: covid19@kwema.co



Everyday 1,000 employees lose their life while at work. We mitigate the safety risks that employees face by providing wearables that activates the right help.

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Everyday 1,000 employees lose their life while at work. We mitigate the safety risks that employees face by providing wearables that activates the right help.