Multifactorial analysis of cancer patients’ willingness for COVID-19 vaccination.

Abstract

12062 Background: Public health authorities advocate vaccinations for the general population, including cancer patients and survivors. Since the onset of the COVID-19 pandemic, its vaccine has been eagerly awaited, but the extent of cancer patients’ willingness to get vaccinated is not clear. As health promotion is crucial for these individuals, it is important to measure and analyze their willingness to receive the vaccine. Methods: A few days after the regulatory approval for the first COVID-19 vaccine, the CareAcross online interactive platforms were used to evaluate the willingness of patients to get vaccinated. Through an online survey, within a few hours, 1106 cancer patients selected either “Yes, I plan to get the vaccine” or “No, I will not get the vaccine”. The patients were from the UK, Germany, France, Spain or Italy; they had been diagnosed with breast, lung, prostate or colorectal cancer. Their responses were analyzed to determine how their cancer diagnosis (including date, metastatic status, and other aspects), and their country of origin, affected their reported willingness to get vaccinated. Results: Overall, 70.6% of patients indicated willingness to get the vaccine (WTV), and 29.4% reported the opposite (NWTV). The strongest determinant of WTV was the patient’s country of origin: patients in the UK, Spain, Italy, Germany and France reported WTV of 84.1%, 64.2%, 58.7%, 47.4% and 38.3%, respectively. The next strongest determinant was the time elapsed since the patient’s diagnosis: for the largest population with available diagnosis date (451 UK patients), the average time since diagnosis for patients with WTV vs NWTV was: breast, 3.5 vs 2.5 years; lung, 1.6 vs 1.4 years; prostate, 2.4 vs 3.3 years; colorectal, 1.9 vs 1.5 years. Among patients from other countries with available diagnosis date: as the time since diagnosis increased, among 148 Italian patients WTV gradually increased; among 94 Spanish patients, WTV substantially decreased; among 85 French patients, WTV gradually decreased; among 50 German patients, WTV substantially increased. There was no significant correlation of WTV percentages with cancer type; metastatic status; triple negative vs non-triple negative among breast cancer patients; non-small cell vs small cell among lung cancer patients. Conclusions: Despite long-standing efforts of the scientific community for health promotion through the COVID-19 vaccine, a substantial percentage of cancer patients reported no willingness to get vaccinated. This appeared to depend on each patient’s country of origin, and the time elapsed since their diagnosis. This patient input was collected shortly after the first vaccine’s approval. With increasing evidence of efficacy and safety through more vaccinations of citizens and patients, willingness is expected to increase. We are in the process of conducting a follow-up survey to track these changes and update the results to be reportable during ASCO.