COVID-19 is highly contagious and spreading rapidly around the United States and the globe. Because it is a new disease in humans, our immune systems have not yet developed any defenses against it.

There is currently no vaccine to prevent coronavirus disease (COVID-19). Vaccines help protect us by providing immunity without having to get sick. Medical experts around the globe are actively researching potential vaccinations that may lessen or prevent illness from COVID-19.

The best way to avoid illness is to avoid being exposed to the virus. The virus is believed to spread primarily from person-to-person contact between people who are in close contact with each other (within about six feet). When an infected person coughs, sneezes or talks respiratory droplets are released from the mouth and nose which may land in the mouth or nose of people nearby. Individuals who are infected but not showing symptoms may still spread COVID-19 to others.

COVID-19 seems to also spread by airborne transmission. These smaller respiratory droplets exhaled when people breath, talk or sing and may linger in the air for minutes or hours, posing a risk to others who are more than six feet away or even after a person has left the space. This type of transmission is more likely to occur in enclosed, indoor spaces with poor ventilation and when the infected person was breathing heavily, such as singing or exercising.

While possible, it is less common that COVID-19 will spread through contact with contaminated surfaces, such as touching a surface that has the virus on it and then touching your mouth, nose or eyes.

Steps to protect yourself from possible infection include:

  • Stay home. The best way to prevent COVID-19 is to avoid being exposed to the virus. Exposure to individuals who live outside of your household increases your risk of coming into contact with the virus.
  • Maintain social distance. Keep at least six feet from people who don’t live in your home when you must be out in the community.
  • Wear a mask. Cloth face coverings should be worn outside the home whenever there is a possibility of not being able to maintain a six-foot distance between individuals not living in your household. Even when wearing a mask, maintain social distance of at least six feet from others. Face covers should cover both your mouth and nose.
  • Wash your hands often. Scrub with soap and water for at least 20 seconds. If you are unable to wash your hands, using hand sanitizer that contains at least 60% alcohol is a good alternative.
  • Avoid crowded indoor spaces and try to be aware that indoor spaces are properly ventilated with as much outdoor air as possible. Being outdoors and in spaces with good ventilation reduces the risk of the spread of COVID-19.
    • Avoid touching your eyes, nose and mouth—as it allows the germs on your hands to reach moist, porous surface tissue where the germs can enter your body and cause infection.
    • Cough in your elbow and cover your mouth and nose with a tissue when you sneeze. Then immediately dispose of the tissue and wash your hands.
  • Clean and disinfect frequently touched surfaces, such as door handles, light switches, faucets and phones, often and with an approved disinfectant. symptoms that could be COVID-19.
  • Stay home if you feel unwell and call your healthcare provider if you experience symptoms that could be COVID-19.

Our Lung HelpLine is answering questions about COVID-19. Contact our Lung HelpLine by calling 1-800-LUNGUSA or submitting a question online.

Page last updated: October 12, 2020

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