Jonathan Fok
Public Health England
8 Papers
Jonathan Fok is an academic researcher from Public Health England. The author has contributed to research in topics: Medicine & Asymptomatic. The author has an hindex of 5, co-authored 7 publications.
Chat about Author
Papers
Increased risk of SARS-CoV-2 infection in staff working across different care homes: enhanced CoVID-19 outbreak investigations in London care Homes.
Shamez N Ladhani,J. Yimmy Chow,Roshni Janarthanan,Jonathan Fok,Emma Crawley-Boevey,Amoolya Vusirikala,Elena Fernandez,Marina Sanchez Perez,Suzanne Tang,Kate Dun-Campbell,Edward Wynne-Evans,Anita Bell,Bharat Patel,Zahin Amin-Chowdhury,Felicity Aiano,Karthik Paranthaman,Thomas Ma,Maria Saavedra-Campos,Richard M. Myers,Joanna Ellis,Angie Lackenby,Robin Gopal,Monika Patel,Meera Chand,Kevin E. Brown,Susan Hopkins,Nandini Shetty,Maria Zambon,Mary Ramsay +28 more
TL;DR: In this article, the authors assessed occupational risk factors for SARS-CoV-2 infection among staff in six care homes experiencing a COVID-19 outbreak during the peak of the pandemic in London, England.
106
Investigation of SARS-CoV-2 outbreaks in six care homes in London, April 2020.
Shamez N Ladhani,Shamez N Ladhani,J. Yimmy Chow,Roshni Janarthanan,Jonathan Fok,Emma Crawley-Boevey,Amoolya Vusirikala,Elena Fernandez,Marina Sanchez Perez,Suzanne Tang,Kate Dun-Campbell,Edward Wynne Evans,Anita Bell,Bharat Patel,Zahin Amin-Chowdhury,Felicity Aiano,Karthik Paranthaman,Thomas Ma,Maria Saavedra-Campos,Richard M. Myers,Joanna Ellis,Angie Lackenby,Robin Gopal,Monika Patel,Colin S Brown,Meera Chand,Kevin E. Brown,Mary Ramsay,Susan Hopkins,Nandini Shetty,Maria Zambon +30 more
TL;DR: A high prevalence of SARS-CoV-2 positivity was found in care homes residents and staff, half of whom were asymptomatic and potential reservoirs for on-going transmission.
102
High Prevalence of SARS-CoV-2 Antibodies in Care Homes Affected by COVID-19; Prospective Cohort Study, England
Shamez N Ladhani,Shamez N Ladhani,Anna Jeffery-Smith,Monika Patel,Roshni Janarthanan,Jonathan Fok,Emma Crawley-Boevey,Amoolya Vusirikala,Elena Fernandez,Marina Sanchez Perez,Suzanne Tang,Kate Dun-Campbell,Edward Wynne-Evans,Anita Bell,Bharat Patel,Zahin Amin-Chowdhury,Felicity Aiano,Karthik Paranthaman,Thomas Ma,Maria Saavedra-Campos,Joanna Ellis,Meera Chand,Kevin E. Brown,Mary Ramsay,Susan Hopkins,Susan Hopkins,Nandini Shetty,J. Yimmy Chow,Robin Gopal,Maria Zambon +29 more
TL;DR: RT PCR provides a point prevalence of SARS-CoV-2 infection but significantly underestimates total exposure in outbreak settings, and in care homes experiencing large COVID-19 outbreaks, most residents and staff had neutralising Sars-Cov-2 antibodies, which was not associated with age or symptoms.
Infection and transmission of SARS-CoV-2 in London care homes reporting no cases or outbreaks of COVID-19: Prospective observational cohort study, England 2020
Anna Jeffery-Smith,Kate Dun-Campbell,Roshni Janarthanan,Jonathan Fok,Emma Crawley-Boevey,Amoolya Vusirikala,Elena Fernandez Ruiz De Olano,Marina Sanchez Perez,Suzanne Tang,Thomas A.J. Rowland,Edward Wynne-Evans,Anita Bell,Bharat Patel,Zahin Amin-Chowdhury,Felicity Aiano,Karthik Paranthaman,Thomas Ma,Maria Saavedra-Campos,Joanna Ellis,Angie Lackenby,Heather Whitaker,Richard M. Myers,Katja Hoschler,Kevin E. Brown,Mary Ramsay,Nandini Shetty,J. Yimmy Chow,Shamez N Ladhani,Shamez N Ladhani,Maria Zambon +29 more
- 22 Jan 2021
TL;DR: In this article, the authors investigated the role of asymptomatic infection and silent transmission in London care homes that reported no cases of COVID-19 during the first wave of the pandemic.
34
High prevalence of SARS-CoV-2 antibodies in care homes affected by COVID-19; a prospective cohort study in England
Shamez N Ladhani,Anna Jeffery-Smith,Monika Patel,Roshni Janarthanan,Jonathan Fok,Emma Crawley-Boevey,Amoolya Vusirikala,Elena Fernandez,Marina Sanchez-Perez,Suzanne Tang,Kate Dun-Campbell,Edward Wynne-Evans,Anita Bell,Bharat Patel,Zahin Amin-Chowdhury,Felicity Aiano,Karthik Paranthaman,Thomas Ma,Maria Saavedra-Campos,Joanna Ellis,Meera Chand,Kevin E. Brown,Mary Ramsay,Susan Hopkins,Nandini Shetty,J. Yimmy Chow,Robin Gopal,Maria Zambon +27 more
TL;DR: Elderly frail residents and younger healthier staff were equally able to mount robust and neutralizing antibody responses to SARS-CoV-2 and RT-PCR testing significantly underestimates the true extent of an outbreak in institutional settings.
16