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COVID-19 Trends in the Phoenix Metropolitan Area from a Mobile Testing Program: Last Quarter of 2020
Christine S M Lau1, Sebastian Shu2, Jennifer Mayer2
1Vincere Cancer Center, 7469 E. Monte Cristo Avenue, Scottsdale, AZ, 85260, USA. drlau@vincerecancer.com.
Journal of Community Health
|April 29, 2021
Summary
COVID-19 positivity rates increased in late 2020 in Arizona. Antigen and antibody testing showed significant upticks in November and December, highlighting the need for continued public health measures to mitigate virus spread.
Area of Science:
- Epidemiology
- Public Health
- Infectious Diseases
Background:
- The COVID-19 pandemic remained a significant public health challenge.
- Arizona experienced a surge in COVID-19 cases, indicating its status as a hotspot.
- Understanding positivity rate trends is vital for effective virus mitigation strategies.
Purpose of the Study:
- To analyze trends in COVID-19 testing volume.
- To examine COVID-19 antigen and antibody positivity rates over a three-month period (October-December 2020).
- To identify factors contributing to observed positivity trends.
Main Methods:
- A retrospective study design was employed.
- Data were collected from a mobile testing program in the Phoenix metropolitan area.
- COVID-19 antigen and antibody (IgG) positivity rates were analyzed for 6710 patients.
Main Results:
- Testing volume increased progressively from October to December 2020.
- COVID-19 antigen positivity was significantly higher in December (13.43%) compared to October (11.43%) and November (10.86%).
- COVID-19 IgG positivity significantly increased in November (16.65%) and December (16.50%) compared to October (8.74%).
Conclusions:
- A notable increase in COVID-19 positivity occurred towards the end of 2020.
- Holiday gatherings and eased restrictions likely contributed to the rise in cases.
- Sustained public health interventions are essential for controlling COVID-19 transmission.
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