Covid vaccines may have lower efficacy in people with blood cancers, new studies suggest

The treatment appears to have a negative effect on jab response, Liam James writes

Scientists looked at the mRNA vaccines Pfizer and Moderna (Reuters)

Certain Covid vaccines may be less effective for blood cancer patients, two new studies suggest.

The mRNA vaccine Pfizer was found to provide less of an immune response among sufferers of chronic lymphocytic leukemia (CLL) and multiple myeloma. Scientists said the same result was expected with the other mRNA vaccine Moderna.

Two studies published in Blood, the American Society of Haematology, journal on Friday recorded a difference in response between healthy people and those suffering from the blood cancers.