Expert Researcher

David Johnson

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Publications: 2
AREAS OF EXPERTISE
EDUCATION
All work from David Johnson
2 November 2020

Assessment of Contact Tracing Options for South Africa

Current epidemiology research on COVID-19 shows that contact tracing is only able to curb the growth of the epidemic, if we identify 50% of the positive cases and trace 60% of their contacts with no delay. If we take more than three days to quarantine …

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30 September 2020

Contact Tracing in South Africa

Containing the spread of COVID-19 (and the SARS-CoV-2 virus) involves an interlocking set of activities and none of these alone are a silver bullet to technically containing the virus. Due to the high natural rate of infection for COVID-19 (it has a ba …

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