What People With Cancer Should Know About Coronavirus

Medically Reviewed by Brunilda Nazario, MD on July 02, 2020

If you have cancer now or have had it in the past, you have an “underlying medical condition” or “pre-existing condition” that can put you at higher risk for serious problems if you become infected with the new coronavirus.

Your immune system may not be as strong as it was before cancer. Many cancer treatments make the immune system weak. And other things, like stress, diet changes, and sleep problems, can also impact your immune system.

A weakened immune system makes it harder for you to fight infections, including a coronavirus infection. It also makes you more likely to have complications if you do become infected.

What can I do to lower my risk?

The best thing you can do is try to keep from getting infected with the new coronavirus. You should consider taking the COVID-19 vacine if it is available. Follow these precautions to help lower your risk. Encourage the people you live with to do the same:

  • Keep at least 6 feet of space between yourself and other people.
  • Stay at home as much as you can.
  • When you do go out, avoid crowds.
  • Wear a face mask.
  • Use a tissue when you cough or sneeze, then throw it away and wash your hands. Or cough into your elbow instead of your hand.
  • Wash your hands often and for at least 20 seconds. Be sure to wash your hands after coughing, sneezing, or blowing your nose. Also wash them after you’ve been in a public place.
  • If you can’t use soap and water, use a hand sanitizer that contains at least 60% alcohol. Rub it on all parts of your hands and let it air dry.
  • Try to not touch your eyes, nose, or mouth unless you’ve just washed your hands.
  • Clean all surfaces you touch a lot, like doorknobs, phones, keyboards, and such. Use regular household cleaning spray or wipes.

Is there anything special I need to do?

If you’re in cancer treatment now, talk to your cancer treatment team about what you should watch for and when you should call them. Be sure you know how to reach them after office hours, on weekends, and on holidays.

If you’ve finished your cancer treatment, ask your primary care doctor about health questions and symptoms.


  • Try to be extra careful about following the recommendations made by the CDC to help lower your risk of infection.
  • Stay away from anyone who appears to be sick.
  • Make sure you have enough medication at home. This includes prescription and over-the-counter drugs. Try to have at least a 1-month supply. You may want to switch to mail-order delivery so you don’t have to go out to get your prescriptions.
  • Make a list of emergency numbers that you might need so you have them all in one handy place, just in case.

The coronavirus situation changes often, so keep up with the news and latest guidelines, without letting it stress you out too much. Also, make sure you stay in touch -- from a safe distance -- with loved ones. Try to get some exercise, if you’re up to it, and get outside for a break. That’s fine to do, as long as you stay at least 6 feet away from other people. Your health is about more than your cancer, so take care of your mental and emotional health, as well as your physical health, during this especially stressful time.

Does my cancer treatment weaken my immune system?

Chemotherapy affects the whole body, including the immune system. These medications that kill cancer cells also lower your number of white blood cells, which fight infection. There are times in your treatment cycle when your white blood cell counts are lowest; this is when you’re at highest risk for infection. Your blood counts are checked often during treatment. So your treatment team can tell you when you’re at greatest risk. Still, do what you can to help prevent infection all the time.

Other types of cancer treatment -- such as radiation, immunotherapy, targeted therapy, and surgery -- can affect your immune system, too. Talk to your cancer care team about your treatment plan, how it impacts your risk for infection, and what you need to do during the coronavirus pandemic.

Is it OK to get cancer treatment if it weakens my immune system?

Cancer treatment is very important. You’ll want to weigh the benefits of treatment against your risks from the new coronavirus. Ask your doctor about your options to help you decide what to do about your cancer treatment during this time.

If you’ve been diagnosed with cancer but haven’t started treatment yet, you might be able to wait with some kinds of cancer, but other kinds need to be treated right away. Talk with your doctor to better understand your cancer, how fast it’s growing, and how treatment might impact your risk for infection.

Is it safe for me to get my cancer treatment at a doctor’s office or hospital during the coronavirus pandemic?

Health care centers, hospitals, and doctors are doing everything they can to help limit the spread of the virus. This might change some things about your cancer treatment routine.

For instance, you might not be allowed to bring a support person with you into the clinic, you may have to answer a series of questions before you’re allowed into the building, or your treatment may be rescheduled so fewer people get treatment at the same time to allow for safe distances between them.

Some providers are using video conferencing and telemedicine to do visits while also limiting in-person contact. Changes seem to come up every day. Talk to your cancer care provider to find out what’s best for you.

WebMD Medical Reference



National Institutes of Health: “People who are at higher risk for severe illness,” “How to Protect Yourself.”

National Cancer Institute: “Coronavirus: What People with Cancer Should Know,” “Infection and Neutropenia during Cancer Treatment.”

Annals of Internal Medicine: “A War on Two Fronts: Cancer Care in the Time of COVID-19.”

American Society of Clinical Oncology: “Common Questions About Coronavirus 2019 and Cancer: Answers for Patients and Survivors,” “Coronavirus 2019: What People With Cancer Need to Know.”

World Health Organization: “Q&A on coronaviruses (COVID-19).”

MD Anderson Cancer Center: “Masks 101: What you need to know during the COVID-19 pandemic.”

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