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A SARS-CoV-2 outbreak in a plastics manufacturing plant
Alice Graham1, Amber I Raja2, Karin van Veldhoven3
1Rapid Investigation Team, Field Services, UK Health Security Agency, Wellington House, London, UK.
BMC Public Health
|June 5, 2023
Summary
A SARS-CoV-2 outbreak investigation at a plastics plant revealed high transmission risks due to inadequate ventilation and close work contacts. Enhanced infection control measures, including better masks and ventilation, are crucial for manufacturing settings.
Area of Science:
- Occupational Health
- Infectious Disease Epidemiology
- Environmental Health
Background:
- A significant SARS-CoV-2 outbreak occurred at a UK plastics manufacturing facility, resulting in a 14.3% attack rate.
- The outbreak highlighted potential transmission vulnerabilities within industrial work environments.
Purpose of the Study:
- To conduct a comprehensive investigation into a SARS-CoV-2 outbreak at a plastics manufacturing plant.
- To identify transmission routes and risk factors associated with the workplace and workers.
Main Methods:
- Utilized environmental assessments, surface sampling, molecular and serological testing.
- Conducted detailed questionnaires to gather worker-related data and assess risk factors.
- Employed real-time CO2 monitoring to evaluate ventilation adequacy.
Main Results:
- The technical office showed the highest localized attack rate (21.4%) with frequent CO2 peaks (2100ppm).
- SARS-CoV-2 RNA was detected on surfaces (Ct ≥35), and high noise levels (79dB) were noted.
- Workers reported frequent close contacts (73.1%), tool sharing (75.5%), low mask usage (20.0%), and job security concerns (71.0%).
Conclusions:
- Reinforces the need for enhanced infection control in manufacturing, including improved ventilation and CO2 monitoring.
- Recommends air cleaning interventions and provision of quality face masks (surgical, FFP2/FFP3) when social distancing is not feasible.
- Suggests further research into the impact of job security concerns on self-isolation adherence and workplace safety.
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