SARS-CoV-2 Viability on 16 Common Indoor Surface Finish Materials

Area of Science:

• Environmental microbiology
• Virology
• Public health

Background:

• Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) causes a significant global health concern.
• Environmental surface contamination poses a risk for disease transmission.
• Previous research indicates prolonged detection of infectious viral particles on surfaces.

Purpose of the Study:

• To assess the stability and survival of SARS-CoV-2 on common environmental surfaces.
• To quantify the duration of infectious SARS-CoV-2 viability on various materials.
• To inform public health strategies regarding surface contamination and transmission risk.

Main Methods:

• Inoculation of 16 common surface materials with SARS-CoV-2.
• Collection of samples at multiple time points up to 168 hours post-infection.
• Quantification of viral titers using plaque assays and statistical modeling for survival analysis.

Main Results:

• A rapid decrease in infectious SARS-CoV-2 was observed across all surfaces within 4 hours.
• By 12 hours, infectious virus was only detected on four surfaces.
• By 30 hours, infectious virus was recoverable from only one surface, though survival varied by material.

Conclusions:

• Infectious SARS-CoV-2 has limited viability on most environmental surfaces over time.
• A residual risk of transmission via surface contamination exists, particularly in indoor settings.
• Emphasizes the importance of continued hand hygiene, personal protective equipment, and environmental decontamination procedures.