After consultation with your doctor, it’s generally okay to have some types of vaccines when you’re getting chemotherapy, such as the:
flu shot
COVID-19 vaccine
shingles vaccine
People undergoing chemo should not get live vaccines like the flu nasal spray vaccine and the chickenpox vaccine. That’s because live vaccines can potentially cause serious problems for people with a weakened immune system.
If you have a weakened immune system, you may not make a good response to vaccines. Because of this, in some situations, your doctor may recommend waiting for at least 3 months after your treatment ends to get vaccinated.