Information on COVID-19 Vaccine For Cancer Patients

Introduction:

In light of challenging and rapidly increasing COVID-19 (coronavirus disease 2019) cases, having cancer increases the risk of severe infection with this deadly virus. While this COVID-19 vaccination is offering a way to end this pandemic crisis, a concern is arising about whether it is safe for patients with cancer to take the vaccine.

Can People With Cancer Take Any Type of Vaccine?

Certain types of cancer and various cancer treatments affect the patient's immune system. People with weakened immune systems should not take any vaccine that contains live viruses. The vaccines that contain live viruses may cause infections in persons with weakened immunity, which may even become life-threatening. So, make sure a patient consults their healthcare professional before getting vaccinated.

Is There a Specific COVID-19 Vaccine Recommended for People With Cancer?

Pfizer-BioNTech and Moderna vaccines are mRNA-based (messenger RNA-based), while Novavax uses a protein subunit approach. All three vaccines have been updated for Omicron variants. Some authorized organizations, like the CDC (Centers for Disease Control and Prevention), recommend staying current with COVID-19 vaccines. Consult your cancer doctor for guidance, as recommendations may change. Updated vaccines are available for ages six months and older.

Is the COVID-19 Vaccine Recommended for Cancer Patients and Survivors?

Every person with cancer survivors included should remain up to date with the COVID-19 vaccines, as suggested by the CDC and other experts. Vaccination is essential, even for someone who has experienced COVID-19, since immunity from infection is not durable and protection is not guaranteed for newer virus variants over time. Although COVID-19 vaccines are safe for cancer patients, their effectiveness may be reduced in individuals with a compromised immune system from chemotherapy, radiation, or immunotherapy. It is essential to discuss vaccine benefits, risks, and timing with your cancer doctor for personalized advice.

Which Are the Available COVID-19 Vaccines?

Currently, 38 approved vaccines (approved by different national government bodies) and ten vaccines are listed by WHO for Emergency Use Listing (EUL).

The vaccines granted Emergency Use Listing (EUL) by WHO are:

• Sputnik V (Gamaleya).

• Covilo (Sinopharm).

• CoronaVac (Sinovac).

• Ad26.COV2.S (Johnson & Johnson).

• Spike Vax (Moderna).

• Comirnaty (Pfizer and BioNTech).

• Covexin (Bharat Biotech).

• Covovax and Covishield (Serum Institute of India).

• Nuvaxovid (Novovax).

• Vaxzevria (Oxford/AstraZeneca).

• The Pfizer-BioNTech COVID-19 vaccine is given to people above the age of 16. It is a two-shot vaccine. These vaccines are administered in two doses, like three weeks apart. It also gained emergency use authorization for children aged five through 11 years and older.

• The Moderna COVID-19 vaccine is given to people over the age of 18. It is a two-shot vaccine offered in two doses four weeks apart.

• Johnson & Johnson's COVID-19 vaccine is a single-shot vaccine. It is given to people over 18 as a single shot.

What Are the Side Effects of COVID-19 Vaccines?

The COVID vaccine side effects commonly experienced after getting vaccinated are,

• Pain at the injection site.

• Fever.

• Headache.

• Fatigue.

• Chills.

• Body pain.

• Swollen lymph nodes.

These side effects, which are generally mild, go away within a few days. However, in the case of two-shot vaccines, the side effects may be slightly intense after the second shot.

Do COVID-19 Vaccines Cause Cancer or Accelerate Its Growth?

The primary concern about getting vaccinated is not whether the vaccine is safe for patients with cancer but how effective the vaccines will be, particularly for people with weakened immune responses. Some cancer treatments like chemotherapy, radiotherapy, stem cell transplant, bone marrow transplant, or immunotherapy can affect the immune system, affecting the vaccine's effectiveness. Patients with certain types of cancer, like leukemia and lymphoma, can also have weakened immune systems.

Patients with cancer or with a previous history of cancer can get vaccines, but this depends on the type of vaccine, the type of cancer they have or previously had, and whether the immune system is working effectively. So, it is better to consult the physician before getting vaccinated with the COVID-19 vaccine in cancer patients.

Can Patients With Breast Cancer Get a COVID-19 Vaccine?

Certain people may develop swelling of lymph nodes under their arms where the injection was given. A swollen lymph node is also a sign of breast cancer. So health experts recommend people with breast cancer get the injection on the opposite side of their breast that is affected by cancer. If surgery was done on both breasts, then it is better to consult the healthcare professional before getting vaccinated.

Do Vaccines Affect Mammograms?

There is a chance of developing swollen lymph nodes after the vaccination. If a mammogram is taken after the vaccination, these swollen lymph nodes will show up on the mammogram, leading to misdiagnosis. So, it is better to inform the healthcare professional about the vaccination and the arm in which the injection was given to avoid further confusion and misdiagnosis. At the same time, do not delay the mammogram. Experts recommend waiting four to six weeks after completing their vaccine doses before getting a mammogram to avoid false-positive results.

Does Vaccine Have an Effect on Steroids and Chemotherapy?

If the patient is taking steroids and is on chemotherapy or immunotherapy, they are advised to avoid any vaccine or consult with their medical health professional team before undertaking any vaccine. The same holds for the COVID-19 vaccine. It is strongly recommended that the treating doctor be consulted before undertaking any vaccine, including the COVID-19 vaccine.

Can COVID-19 Vaccines Cause Cancer or Make Cancer Grow?

The vaccines, including mRNA (messenger RNA), were strictly tested for safety before becoming available. There is no scientific evidence to prove that COVID-19 vaccines increase cancer or tumor growth.

Should I Still Take Precautions After Getting the COVID-19 Vaccine?

The COVID-19 vaccines are under study, and some facts remain uncertain, like how long they protect against the virus. The vaccines drastically reduce the risk of severe illness but are not known to prevent virus transmission to others.

For people whose immune systems are weakened, for example, many persons with cancer-expert groups continue to recommend preventive measures, such as wearing masks, maintaining physical distance, handwashing, and avoiding crowded places, even after vaccination. There is hypothetical evidence based on an in silico study that COVID-19 infection causes cancer like pancreatic adenocarcinoma. Caregivers and close contacts should also observe these precautions.

Conclusion:

Everyone should remain cautious about the COVID-19 vaccine and cancer. It is vital to be aware of the fact that some people with cancer will have weakened immune systems, which can make the COVID-19 vaccines less effective Also, there is no evidence of the COVID vaccine causing cancer in people. However, health experts and national authorities have tested the effectiveness and safety of the COVID-19 vaccines. Nevertheless, it is still difficult to say if patients with cancer will have the same level of effectiveness. So it is crucial to follow all the guidelines and precautions longer, like wearing double masks, washing hands frequently with soap and water, and social distancing.