Debunking COVID-19 (coronavirus) myths

Chances are you’ve heard about a food, drug or other method that claims to prevent, treat or cure coronavirus disease 2019 (COVID-19). But while it might be tempting to use a questionable product or method to stay healthy during the pandemic, it’s extremely unlikely to work and might cause serious harm.

COVID-19 treatment and prevention myths

Currently, no cure is available for COVID-19. Researchers are testing a variety of treatments. But misinformation continues to circulate about ways to prevent infection with the COVID-19 virus or treat COVID-19.

Here’s what the science says:

  • Pneumonia and flu vaccines. Vaccines against pneumonia, such as the pneumococcal vaccine, don’t provide protection against the COVID-19 virus. The flu shot also won’t protect you against the COVID-19 virus. However, annual flu vaccinations are recommended for everyone age 6 months and older.
  • Saline nasal wash. There is no evidence that rinsing your nose with saline protects against infection with the COVID-19 virus.
  • High temperatures. Exposure to the sun or to temperatures higher than 77 F (25 C) doesn’t prevent the COVID-19 virus or cure COVID-19. You can get the COVID-19 virus in sunny, hot and humid weather. Taking a hot bath also can’t prevent you from catching the COVID-19 virus. Your normal body temperature remains the same, regardless of the temperature of your bath or shower.
  • Low temperatures. Cold weather and snow also can’t kill the COVID-19 virus.
  • Antibiotics. Antibiotics kill bacteria, not viruses. However, people hospitalized due to COVID-19 might be given antibiotics because they also have developed a bacterial infection.
  • Alcohol and chlorine spray. Spraying alcohol or chlorine on your body won’t kill viruses that have entered your body. These substances also can harm your eyes, mouth and clothes.
  • Drinking alcohol. Drinking alcohol doesn’t protect you from the COVID-19 virus.
  • Garlic. There’s no evidence that eating garlic protects against infection with the COVID-19 virus.
  • Ultraviolet (UV) disinfection lamp. Ultraviolet light can be used as a disinfectant on surfaces. But don’t use a UV lamp to sterilize your hands or other areas of your body. UV radiation can cause skin irritation.
  • 5G mobile networks. Avoiding exposure to or use of 5G networks doesn’t prevent infection with the COVID-19 virus. Viruses can’t travel on radio waves and mobile networks. The COVID-19 virus is spreading in many countries that lack 5G mobile networks.
  • Disinfectants. When applied to surfaces, disinfectants can help kill germs such as the COVID-19 virus. However, don’t use disinfectants on your body, inject them into your body or swallow them. Disinfectants can irritate the skin and be toxic if swallowed or injected into the body. Also, don’t wash produce with disinfectants.
  • Supplements. Many people take vitamin C, zinc, green tea or echinacea to boost their immune systems. But these supplements are unlikely to affect your immune function or prevent you from getting sick. The supplement colloidal silver, which has been marketed as a COVID-19 treatment, isn’t safe or effective for treating any disease. Oleandrin, an extract from the toxic oleander plant, is poisonous and shouldn’t be taken as a supplement or home remedy.
  • Ivermectin. This drug is often used in the U.S. to treat or prevent parasites in animals. In humans, specific doses of ivermectin tablets can be used to treat parasitic worms and a topical version can be applied to the skin to treat head lice and skin conditions. However, ivermectin isn’t a drug for treating viruses and the FDA hasn’t approved use of this drug to treat or prevent COVID-19. Taking large doses of this drug can cause serious harm. Don’t use medications intended for animals on yourself.

Focus on facts

The U.S. Food and Drug Administration has been working to remove misleading products from store shelves and online marketplaces. In the meantime, remember that testimonials aren’t a substitute for scientific evidence. Also, few diseases can be treated quickly, so beware of quick fixes. A miracle cure that claims to contain a secret ingredient is likely a hoax.

If you have a question about a method for treating COVID-19 or preventing infection with the COVID-19 virus, talk to your doctor. To ask a question about a COVID-19 medication, you can call your local pharmacist or the FDA‘s Division of Drug Information.

Effective COVID-19 prevention tips

There are steps you can take reduce your risk of infection. When possible, get a COVID-19 vaccine. If you’re fully vaccinated, you can more safely return to doing activities that you might not have been able to do because of the pandemic. However, if you are in an area with a high number of new COVID-19 cases, the CDC recommends wearing a mask indoors in public and outdoors in crowded areas or when you are in close contact with people who aren’t fully vaccinated.

If you haven’t had a COVID-19 vaccine, the World Health Organization (WHO) and the U.S. Centers for Disease Control and Prevention (CDC) recommend following these precautions for avoiding COVID-19:

  • Avoid close contact (within about 6 feet, or 2 meters) with anyone who is sick or has symptoms.
  • Keep distance between yourself and others (within about 6 feet, or 2 meters), especially if COVID-19 is spreading in your community, especially if you have a higher risk of serious illness. Keep in mind some people may have COVID-19 and spread it to others, even if they don’t have symptoms.
  • Wash your hands often with soap and water for at least 20 seconds, or use an alcohol-based hand sanitizer that contains at least 60% alcohol.
  • Wear a face mask in indoor public spaces. If you are in an area with a high number of new COVID-19 cases, wear a mask outdoors in crowded areas or when you are in close contact with others who aren’t fully vaccinated.
  • Cover your mouth and nose with your elbow or a tissue when you cough or sneeze. Throw away the used tissue and wash your hands or use hand sanitizer.
  • Avoid touching your eyes, nose and mouth.
  • Avoid sharing dishes, glasses, bedding and other household items if you’re sick.
  • Clean and disinfect high-touch surfaces daily.
  • Stay home from work, school and public areas if you’re sick, unless you’re going to get medical care. Avoid taking public transportation if you’re sick.

Dec. 17, 2021

  1. Beware of fraudulent coronavirus tests, vaccines and treatments. U.S. Food and Drug Administration. https://www.fda.gov/consumers/consumer-updates/beware-fraudulent-coronavirus-tests-vaccines-and-treatments. Accessed April 23, 2020.
  2. Coronavirus disease (COVID-19) advice for the public: Myth busters. World Health Organization. https://www.who.int/emergencies/diseases/novel-coronavirus-2019/advice-for-public/myth-busters. Accessed April 23, 2020.
  3. Coronavirus disease 2019 (COVID-2019): How to protect yourself & others. U.S. Centers for Disease Control and Prevention. https://www.cdc.gov/coronavirus/2019-ncov/index.html. Accessed April 28, 2020.
  4. IE committee report CR-2-20 faqs. Illuminating Engineering Society. https://www.ies.org/standards/committee-reports/ies-committee-report-cr-2-20-faqs/. Accessed April 28, 2020.
  5. Using disinfectants: COVID-19. American Association of Poison Control Centers. https://piper.filecamp.com/uniq/tWyujn4aphIEG7lh.pdf. Accessed April 28, 2020.
  6. Xu B, et al. COVID-19 outbreak associated with air conditioning in restaurant, Guangzhou, China, 2020. Emerging Infectious Diseases. 2020; doi.org/10.3201/eid2607.200764.
  7. Don’t rely on natural products and “immune boosters” for COVID-19 prevention. Natural Medicines. https://naturalmedicines.therapeuticresearch.com/news/news-items/2020/april/dont-rely-on-natural-products-and-immune-boosters-for-covid-19-prevention.aspx. Accessed April 28, 2020.
  8. Coronavirus update: FDA and FTC warn seven companies selling fraudulent products that claim to treat or prevent COVID-19. U.S. Food and Drug Administration. https://www.fda.gov/news-events/press-announcements/coronavirus-update-fda-and-ftc-warn-seven-companies-selling-fraudulent-products-claim-treat-or. Accessed April 28, 2020.
  9. Marshall WF (expert opinion). Mayo Clinic. Aug. 19, 2020.
  10. Plante KS, et al. Prophylactic and therapeutic inhibition of in vitro SARS-CoV-2 replication by oleandrin. bioRxiv. 2020; doi: 10.1101/2020.07.15.203489.
  11. Oleander. Natural Medicines. https://naturalmedicines.therapeuticresearch.com. Accessed Aug. 19, 2020.
  12. Coronavirus disease 2019 (COVID-19): Food and coronavirus disease 2019. Centers for Disease Control and Prevention. https://www.cdc.gov/coronavirus/2019-ncov/daily-life-coping/food-and-COVID-19.html. Accessed Aug. 19, 2020.
  13. COVID-19: Warn patients about poisonous oleander extract. Natural Medicines. https://naturalmedicines.therapeuticresearch.com/. Accessed Sept. 9, 2020.
  14. Choosing safer activities. Centers for Disease Control and Prevention. https://www.cdc.gov/coronavirus/2019-ncov/daily-life-coping/participate-in-activities.html. Accessed April 27, 2021.
  15. When you’ve been fully vaccinated. Centers for Disease Control and Prevention. https://www.cdc.gov/coronavirus/2019-ncov/vaccines/fully-vaccinated.html. Accessed Dec. 15, 2021.
  16. Why you should not use ivermectin to treat or prevent COVID-19. U.S. Food and Drug Administration. https://www.fda.gov/consumers/consumer-updates/why-you-should-not-use-ivermectin-treat-or-prevent-covid-19. Accessed Aug. 27, 2021.
  17. Your guide to masks. Centers for Disease Control and Prevention. https://www.cdc.gov/coronavirus/2019-ncov/prevent-getting-sick/about-face-coverings.html. Accessed Dec. 15, 2021.

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