---
_id: '8597'
abstract:
- lang: eng
  text: Error analysis and data visualization of positive COVID-19 cases in 27 countries
    have been performed up to August 8, 2020. This survey generally observes a progression
    from early exponential growth transitioning to an intermediate power-law growth
    phase, as recently suggested by Ziff and Ziff. The occurrence of logistic growth
    after the power-law phase with lockdowns or social distancing may be described
    as an effect of avoidance. A visualization of the power-law growth exponent over
    short time windows is qualitatively similar to the Bhatia visualization for pandemic
    progression. Visualizations like these can indicate the onset of second waves
    and may influence social policy.
acknowledgement: I would especially like to thank Michael Sixt for encouraging me
  to think about these problems while working at home due to restrictions in place.
  I want to thank Nick Barton, Katka Bodova, Matthew Robinson, Simon Rella, Federico
  Sau, Ivan Prieto, and Pradeep Kumar for useful discussions.
article_number: '065005'
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- first_name: Jack
  full_name: Merrin, Jack
  id: 4515C308-F248-11E8-B48F-1D18A9856A87
  last_name: Merrin
  orcid: 0000-0001-5145-4609
citation:
  ama: Merrin J. Differences in power law growth over time and indicators of COVID-19
    pandemic progression worldwide. <i>Physical Biology</i>. 2020;17(6). doi:<a href="https://doi.org/10.1088/1478-3975/abb2db">10.1088/1478-3975/abb2db</a>
  apa: Merrin, J. (2020). Differences in power law growth over time and indicators
    of COVID-19 pandemic progression worldwide. <i>Physical Biology</i>. IOP Publishing.
    <a href="https://doi.org/10.1088/1478-3975/abb2db">https://doi.org/10.1088/1478-3975/abb2db</a>
  chicago: Merrin, Jack. “Differences in Power Law Growth over Time and Indicators
    of COVID-19 Pandemic Progression Worldwide.” <i>Physical Biology</i>. IOP Publishing,
    2020. <a href="https://doi.org/10.1088/1478-3975/abb2db">https://doi.org/10.1088/1478-3975/abb2db</a>.
  ieee: J. Merrin, “Differences in power law growth over time and indicators of COVID-19
    pandemic progression worldwide,” <i>Physical Biology</i>, vol. 17, no. 6. IOP
    Publishing, 2020.
  ista: Merrin J. 2020. Differences in power law growth over time and indicators of
    COVID-19 pandemic progression worldwide. Physical Biology. 17(6), 065005.
  mla: Merrin, Jack. “Differences in Power Law Growth over Time and Indicators of
    COVID-19 Pandemic Progression Worldwide.” <i>Physical Biology</i>, vol. 17, no.
    6, 065005, IOP Publishing, 2020, doi:<a href="https://doi.org/10.1088/1478-3975/abb2db">10.1088/1478-3975/abb2db</a>.
  short: J. Merrin, Physical Biology 17 (2020).
date_created: 2020-10-04T22:01:35Z
date_published: 2020-09-23T00:00:00Z
date_updated: 2023-08-22T09:53:29Z
day: '23'
ddc:
- '510'
- '570'
department:
- _id: NanoFab
doi: 10.1088/1478-3975/abb2db
external_id:
  isi:
  - '000575539700001'
file:
- access_level: open_access
  checksum: fec9bdd355ed349f09990faab20838a7
  content_type: application/pdf
  creator: dernst
  date_created: 2020-10-05T13:53:59Z
  date_updated: 2020-10-05T13:53:59Z
  file_id: '8609'
  file_name: 2020_PhysBio_Merrin.pdf
  file_size: 1667111
  relation: main_file
  success: 1
file_date_updated: 2020-10-05T13:53:59Z
has_accepted_license: '1'
intvolume: '        17'
isi: 1
issue: '6'
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
publication: Physical Biology
publication_identifier:
  eissn:
  - '14783975'
publication_status: published
publisher: IOP Publishing
quality_controlled: '1'
scopus_import: '1'
status: public
title: Differences in power law growth over time and indicators of COVID-19 pandemic
  progression worldwide
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 17
year: '2020'
...