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Cancer patients have an even greater need for COVID boosters: Research-Consumer Health News
Tuesday, May 24, 2022 (HealthDay News)-Cancer patients continue to face the risks of COVID-19, even if they are vaccinated.
Vaccination is effective for most people with cancer (despite being immunocompromised by the disease and its cancer treatment), but in this group 3-6 compared to the general population. Over the months, its effectiveness diminishes more rapidly.
The UK Coronavirus Cancer Assessment Project is far more effective with vaccines for patients with leukemia or lymphoma of blood cancer, those with a recent cancer diagnosis, and those who received anticancer treatment within the last year. I also found it to be low.
“We know that people with cancer are at increased risk of serious illness. COVID-19 (new coronavirus infection) It is a disease and the immune response of cancer patients after COVID-19 vaccination is low. However, no studies have investigated the efficacy and decline of vaccines in cancer patients at the population level, “said Dr. Leonard Lee, research leader at the Faculty of Oncology, Oxford University.
“We conducted the world’s largest healthcare system assessment of COVID-19 in cancer patients worldwide,” he added in a university news release.
The authors of the study found that obtaining a COVID-19 booster was especially important for cancer patients.
According to co-author Peter Johnson, a professor of oncology at the University of Southampton, “This study is for some cancer patients. COVID-19 vaccination It is less effective and may have a shorter protection period. This highlights the importance of vaccination booster programs and rapid access to COVID-19 treatment for people receiving cancer treatment. ”
In this study, researchers analyzed more than 377,000 individuals with active or recent cancer who had been vaccinated twice with the COVID-19 vaccine and underwent a COVID PCR test in the United Kingdom.
The researchers then compared the number of breakthrough COVID-19 infections and COVID-related hospitalizations and deaths in this group with those from a control group of active or recent cancer-free individuals.
According to the report, the overall vaccine efficacy against COVID-19 infection was almost 70% of the general population who received at least two vaccinations during the study period. By comparison, it was less than 66% in cancer patients.
After 3-6 months, efficacy decreased to approximately 61% in the control group and 47% in the cancer group.
Vaccine protection was higher for cancer group hospitalizations (about 83%) and deaths (about 93%) than infections, but diminished after a few months.
The type of cancer treatment was also important. Vaccines are less effective in cancer patients who have been treated with chemotherapy or radiation therapy in the last 12 months, 3-6 more than cancer patients who did not receive these treatments or were treated more than a year ago. It declined a month later.
Survey results published online on May 23 Lancet Oncology..
For more information
National Cancer Institute, USA COVID-19 and cancer..
Source: Oxford University, News Release, May 23, 2022
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