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CORONA VIRUS

How long can Corona virus stay on different objects

August 23, 20223 Mins Read
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The COVID-19 pandemic has taught us a lot about personal hygiene and the importance of keeping our surroundings clean. One of the questions that has persisted throughout this period is: “How long can the coronavirus survive on different objects?” Understanding this can help us take the necessary precautions to reduce the risk of transmission. Let’s dive into what science tells us about how long the coronavirus can linger on various surfaces.

The Basics of Coronavirus Survival

Coronavirus, specifically SARS-CoV-2, the virus responsible for COVID-19, can be detected on surfaces, but its ability to infect decreases over time. The survival of the virus depends on several factors, including the type of surface, the temperature, humidity, and the presence of any disinfectants.

Surface Survival Times

  1. Plastic and Stainless Steel: Studies have shown that SARS-CoV-2 can survive on plastic and stainless steel for up to 72 hours. This is because these surfaces are non-porous, allowing the virus to remain viable for longer periods. Regular cleaning and disinfecting of these surfaces, especially in high-touch areas, is crucial.
  2. Cardboard: The virus tends to remain viable on cardboard for up to 24 hours. The porous nature of cardboard means that the virus is less likely to survive as long compared to non-porous surfaces. However, it’s still wise to handle packages with care and wash your hands after touching them.
  3. Copper: Copper surfaces are more hostile to the virus. Research indicates that SARS-CoV-2 survives on copper for about 4 hours. Copper has natural antimicrobial properties, which may help in reducing the virus’s survival time.
  4. Glass: The virus can linger on glass surfaces for up to 4-5 days. Although glass is relatively smooth, its durability means that it can harbor the virus longer. Regular cleaning is advised.
  5. Fabric: The survival time of the virus on fabric varies, but it generally persists for about 2 days. The virus’s viability on fabric depends on the type of material and its weave. Washing fabrics at high temperatures can help kill the virus.

Environmental Factors

  • Temperature and Humidity: The virus survives longer in cooler temperatures and lower humidity. Higher temperatures and increased humidity can reduce the virus’s lifespan on surfaces.
  • Sunlight: Ultraviolet (UV) light from the sun can inactivate the virus. Outdoor exposure to sunlight can help reduce the virus’s presence on surfaces.

Practical Tips for Reducing Risk

  1. Regular Cleaning: Use disinfectants that are effective against SARS-CoV-2 to clean high-touch surfaces such as door handles, countertops, and electronics.
  2. Hand Hygiene: Wash your hands frequently with soap and water for at least 20 seconds, especially after touching potentially contaminated surfaces.
  3. Avoid Touching Your Face: Try to avoid touching your face, especially your eyes, nose, and mouth, with unwashed hands.
  4. Ventilation: Improve indoor air quality by increasing ventilation. Fresh air can help reduce the concentration of virus particles in enclosed spaces.
  5. Use of Personal Protective Equipment (PPE): In high-risk situations, wearing masks and gloves can provide an additional layer of protection.

Conclusion

While SARS-CoV-2 can survive on surfaces for varying lengths of time, its ability to infect decreases over time. By maintaining good hygiene practices, cleaning surfaces regularly, and staying informed about new research, we can help reduce the risk of transmission. Remember, while surface contamination is a factor, the primary mode of transmission remains person-to-person through respiratory droplets. Stay safe, and continue to follow public health guidelines to protect yourself and others.

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