Fortunately, the COVID vaccinations offer strong protection from developing COVID-19 (94.1 to 95% protection from severe symptoms of COVID). However, there is still a lot to learn about how strong the vaccination is for different people. We know from studying other vaccines, as well as from initial studies of COVID-19 vaccinations, that when we look at blood to measure individual’s immune responses there is still a lot of differences in the level of antibodies that different people produce. We will measure the antibody response to understand what predicts a strong response one month later, and what predicts the ability of the body to maintain high levels of antibodies over time (6 months after that).
The CDC estimates that the flu vaccination is 70% to 80% effective in preventing the flu (based on large review of randomized placebo-controlled trials of healthy adults). However, the effectiveness of that vaccine is not as strong in older adults. A quantitative review of 30 large studies on the antibody response to flu vaccination estimates that for people 65 years old the protection is only 17% to 53% (Goodwin et al, 2006). Therefore, it is important to examine the influence of age on response to the COVID-19 vaccine as well as other the factors that may play a role in how well we respond to the vaccine.
Psychological stress has been shown to impact the immune responses (O’Connor et al, 2021). The global COVID-19 pandemic has led to many types of stressors, such as financial stability, psychological distress, anxiety, and depression, while the need for social distancing has resulted in social isolation and loneliness. Our BIPOC communities have been especially burdened both with stress as well as discrimination. In addition, the Bay Area is experiencing climate crises, from wildfires to heatwaves. Our communities are under tremendous stress. We will measure an array of challenges as well as factors that protect us from stress and if these predict COVID-19 vaccination responses.
You can read more here from the UCSF News Center: New Study Will Examine How Robustly Individuals Respond to COVID-19 Vaccination
Citations:
Goodwin, K., Viboud, C., & Simonsen, L. (2006). Antibody response to influenza vaccination in the elderly: A quantitative review. Vaccine, 24(8), 1159–1169. https://doi.org/10.1016/j.vaccine.2005.08.105
O'Connor DB, Thayer JF, Vedhara K. Stress and Health: A Review of Psychobiological Processes. Annu Rev Psychol. 2021 Jan 4;72:663-688. doi: 10.1146/annurev-psych-062520-122331. Epub 2020 Sep 4. PMID: 32886587.