How Long Does SARS-CoV-2 Last on Surfaces? What We Know

The video discusses the spread of COVID-19 through respiratory droplets and fomites, highlighting how long the virus can survive on various surfaces. It explains the factors affecting virus longevity, such as surface type, temperature, and humidity. The video also covers the physics of droplet evaporation and emphasizes the importance of cleaning and disinfection to prevent virus transmission.

What is a fomite in the context of virus transmission?

• A respiratory droplet

• A type of disinfectant

• A surface contaminated with pathogens

• A type of virus

How do scientists test the longevity of SARS-CoV-2 on surfaces?

• By measuring the virus's genetic material

• By testing the virus in human subjects

• By recreating a sneeze and testing surface samples

• By observing the virus under a microscope

Which surface was found to have the virus disappear the fastest?

• Steel

• Plastic

• Cardboard

• Copper

What environmental factors can degrade the SARS-CoV-2 virus?

• Temperature, humidity, and UV radiation

• Soil type and water content

• Magnetic fields and sound waves

• Wind speed and air pressure

How does the contact angle affect the evaporation of droplets on surfaces?

• It makes droplets evaporate faster on all surfaces

• It has no effect on evaporation

• It causes droplets to evaporate faster on surfaces where they spread out

• It causes droplets to evaporate slower on surfaces where they spread out

Why is it important to clean surfaces regularly?

• To prevent the spread of viruses

• To make them look shiny

• To increase the lifespan of surfaces

• To reduce humidity

What is a recommended practice after touching potentially contaminated surfaces?

• Washing hands

• Avoiding touching your face

• Using hand sanitizer

• Wearing gloves